chemistry essay answers

Inorganic Chemistry Essay Questions and Answers in Sinhala Medium

You can browse new model questions for inorganic chemistry here. We will add new questions continuously. Check the page daily to see more questions. Answers and explanations are given with the answer.

Questions are presented according to the added date. So, new questions are listed first.

If you have a problem with these questions or any other question in chemistry, email it me. [email protected]

• Chemistry Concept Questions and Answers

Chemistry Questions

The science of chemistry is the study of matter’s characteristics and behaviour. It is a natural science that studies the components that comprise matter, as well as the compounds made up of atoms, molecules, and ions: their composition, structure, qualities, and behaviour, as well as the changes they go through while reacting with other things.

The word chemistry is derived from a variant of the word alchemy, which referred to an ancient range of disciplines that included chemistry, metallurgy, philosophy, astrology, astronomy, mysticism, and medicine.

Recommended Videos

All cool shortcut tricks in chemistry.

Chemistry Questions with Solutions

Q1: What are Atoms?

The proton, neutron, and electron make up an atom, which is the smallest recognised division of a chemical element. The central nucleus, which consists of protons and neutrons, holds 99% of the atom’s mass. Negatively charged electrons whirl about the nucleus in a variety of orbital shells.

• The atomic number refers to the number of protons in a nucleus.
• Because the number of protons in an atom equals the number of electrons, atoms have no overall charge.
• An ion is created whenever an atom gains or loses electrons.

Q2: What do you understand about the Periodic Table?

The Periodic Table is how researchers have arranged the 100+ elements that constitute all matter. Dmitri Mendeleev, a Russian chemist, proposed it in 1869.

Mendeleev arranged the elements in order of the mass of their electrons, unlike prior attempts to organise the elements by characteristics. He also left empty spaces for items that had yet to be identified. As a result, he was able to forecast what those yet-to-be-discovered elements will be like.

The elements are arranged in the Periodic Table in two ways:

Periods: these run from left to right across the table. The number of protons in the nucleus of the atom rises by one as we proceed in this direction.

Groups: Each vertical column represents a group. Because they usually have the same amount of electrons in their outer shell, groups comprise elements with similar properties.

Q3: What are some of the most important branches in Chemistry?

Chemistry is the study of atoms and molecules, as well as their properties. Atoms and molecules are the building blocks of all matter. The following are the five major branches of chemistry:

• Organic chemistry
• Inorganic chemistry
• Physical chemistry
• Biochemistry
• Analytical chemistry

Q4: What is the significance of Organic Chemistry?

The study of carbon compounds is what organic chemistry is about. Organic chemistry is significant since it deals with life studies and all chemical reactions that occur in life. Organic chemistry began with the investigation of chemicals derived from living beings.

There are around 7 million different organic compounds known to exist, but only 1.5 million different inorganic compounds are known to exist. The special feature of carbon gives rise to such a large range of organic molecules.

Q5: The S.I unit of temperature is :

(a) Fahrenheit

(b) Celsius

(d) Centigrade

Explanation: The kelvin is one of the seven SI base units and is used to measure thermodynamic temperature. We designate another unit of temperature, the degree Celsius (°C), in the SI, which is unusual.

Q6: The product of atomic mass and metal specific heat is about 6.4. This information was provided by:

(a) Dalton’s law

(b) Dulong Petit’s law

(c) Newton’s law

(d) Avogadro’s law

Explanation: According to Dulong Petit’s law, the product of an element’s atomic mass and specific heat remains constant, equaling 6.4.

Q7: Among isomeric amines, tertiary amines have the lowest boiling points because:

(a) they have highest molecular mass

(b) they are most basic in nature

(c) they are more polar in nature

(d) they do not form hydrogen bonds

Explanation: Hydrogen bonds can be formed by primary and secondary amines, but not by tertiary amines. As a result, they have the lowest boiling points.

Q8: The most electronegative of the following elements is:

(b) bromine

(d) fluorine

Answer: Option (d)

Q9: 1 mole of K 4 [Fe(CN) 6 ] contains carbon = 6g atoms. 0.5 mole of K 4 [Fe(CN) 6 ] contain carbon = 3g atoms. The mass of carbon present in 0.5 mole of K 4 [Fe(CN) 6 ] is:

Explanation: 1 mole of K 4 [Fe(CN) 6 ] contain carbon = 6g atoms

0.5 mole of K 4 [Fe(CN) 6 ] contain carbon = 3g atoms

Mass of carbon in grams = (12g) × [(3g atoms )/(1g atom )] = (12g) × [(3g)/(1g)] = 36g

Q10: What are metallic/interstitial hydrides? How do they differ from molecular hydrides?

A hydride is a binary chemical that contains an element and a hydrogen atom.

Metallic hydrides are also known as interstitial hydrides. Metallic/interstitial hydrides are compounds in which transition metals and hydrogen are bonded together. They are the source of many d-Block and f-Block elements. Heat and electricity conductors, these hydrides are.

Molecular hydrides are hydrides that have additional electronegative atoms linked to the H-atom. The electrical conductivity of metallic hydrides is strong, while that of molecular hydrides is low. Metallic hydrides are solid, whereas molecular hydrides are gaseous.

Interstitial or metallic hydrides are formed when hydrogen and transition metals bind, as opposed to molecular hydrides, which contain bonding between an electronegative atom and hydrogen.

Q11: What are the sources of dissolved oxygen in water?

The sources of dissolved oxygen in water are photosynthesis, natural aeration, and mechanical aeration. The bulk of oxygen in a pond comes from microscopic algae. Through a process known as photosynthesis, these organisms produce oxygen and release it into the pond water.

Q12: What is the normality of a 1M solution of H 3 PO 4 ?

Explanation: H 3 PO 4 is tribasic.

So, N = 3M, i.e., 3 × 1 = 3.0N

Q13: What is the Ozone Layer?

The ozone layer is a vast shield that surrounds the Earth and extends 50 kilometres above the planet’s surface. Ozone is a unique oxygen molecule with the formula O 3 . It can be up to 20 kilometres thick, with the majority of the gas located in the stratosphere.

Our protection from UVB rays is provided by ozone gases. The Sun emits this harmful radiation, which is exceedingly deadly.

The ozone hole, which spans between 21 and 24 million square kilometres and is mostly over Antarctica, is between 21 and 24 million square kilometres in size. Ozone reacts with CFCs, which are pollutants used in refrigeration, causing enormous breaches in this protection layer.

Q14: Differentiate between disinfectants and antiseptics.

Q15: (a) Why do transition elements show variable oxidation states?

• Name the elements showing a maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z=30)
• Name the element which shows only +3 oxidation state

(b) What is lanthanide contraction? Name an important alloy that contains some of the lanthanoid metals

(a) Elements with partially filled d orbitals are known as transition elements (also known as transition metals). The IUPAC defines transition elements as those that have a partially filled d subshell or those that can form stable cations with an incompletely filled d orbital. The electrical configuration of the transition element is (n-1)d 5 ns 1 or (n-1)d 10 ns 1 .

These elements have varying oxidation states because their valence electrons are in two different sets of orbitals, (n-1)d and ns. Both energy levels can be used to build bonds since the energy difference between them is so minimal. As a result, the oxidation states of transition elements vary.

• The d-subshell of Mn(Z-25) has the most unpaired electrons, thus it has a high oxidation state(+7).
• Scandium (Sc) is the sole element in these series that has a +3 oxidation state.

(b) Lanthanide contraction is the constant decrease in atomic and ionic radii (with the same charge) with rising atomic numbers as we progress from lanthanum to lutetium. Mischmetal is a lanthanide metal alloy that comprises 95% lanthanide metal and 5% Fe, along with traces of S, C, Ca, and Al. In Mg-based alloys, it’s used to create bullets, shells, and lighter flint.

Practise Questions on Chemistry

Q1: Define ‘Amorphous’ and give a few examples of Amorphous Solids.

Q2: Using IUPAC norms write the formula for the following:

• Sodium dicyanidoaurate(I)
• Tetraamminechloridonitrito-N-platinum(IV) sulphate

Q3: (a) Write the colligative property that is used to identify the molecular mass of macromolecules.

(b) In a non-ideal solution, what type of deviation confirms the overview of minimum boiling azeotropes?

Q4: What distinguishes a glass from a solid like quartz? Under which circumstances could quartz be transformed into glass?

Q5: When NiCl 2 .6H 2 O is combined with AgNO 3 , two moles of AgCl are precipitated per mole of the coordination molecule. Write the complex’s structural formula and IUPAC name.

Click the PDF to check the answers for Practice Questions. Download PDF

Introduction to Chemical Bonding

How Will Chemistry Help You Survive Alone on an Island?

Periodic Table – Introduction

Types of Bond: Ionic, Covalent, Coordinate, and Hydrogen Bonds

Leave a Comment Cancel reply

Your Mobile number and Email id will not be published. Required fields are marked *

Request OTP on Voice Call

Post My Comment

Register with BYJU'S & Download Free PDFs

Register with byju's & watch live videos.

Chemistry - Essay Examples And Topic Ideas For Free

Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules, and ions. Essays could explore notable discoveries in chemistry, its sub-disciplines, or its applications in daily life. The interrelation between chemistry and other scientific disciplines or contemporary challenges in chemistry could also be discussed. We have collected a large number of free essay examples about Chemistry you can find at Papersowl. You can use our samples for inspiration to write your own essay, research paper, or just to explore a new topic for yourself.

Neuroscience of Addictions – Brain Chemistry in Action

Prescription stimulants belong to Schedule II drugs as per the Drug Enforcement Administration (DEA) classification. They are highly abused because they are easily accessible. This leads to the emergence of substance abuse disorder. Drug abuse denotes using prescription stimulants or any other drug for reasons other than the intended one. Non-medical use of prescription stimulants increases annually and now ranks second after marijuana among other illicit drugs. Sedative-hypnotics are drugs used to sustain sleep (Schmiedl et al., 2014). Additionally, they […]

Neuroscience and Brian Chemistry of Addictions

Introduction Stimulants are either natural, refined or synthetic. They can be legal or illegal. Stimulants are drugs which can increase mental alertness, inflate physical energy, influences brain chemicals (cause excitement) and brings about euphoria. They stimulate the central nervous system. Some of the medicinal stimulants include amphetamines and methylphenidate, and they are mostly prescribed to both kids and adults diagnosed with attention-deficit hyperactivity disorder (ADHD). Sedative/hypnotic drugs are commonly called depressants. They slow down brain activity. Some of the sedative/hypnotic […]

What is Photosynthesis?

Photosynthesis is the process that transforms organisms from light energy into chemical energy. In order for photosynthesis to take place, it needs these three things: Water, carbon dioxide, and sunlight. As humans, in order to live plants, must take in gases. Plants are known as ""autotrophs, which means organisms that can make their own food. The process of photosynthesis was created and developed Jan Ingenhousz, a British physician and scientist. Joseph Priestley was another scientist who contributed to the discovery […]

We will write an essay sample crafted to your needs.

Effect of Exercise on the Rate of Respiration and the Heart Rate

How does increase the number of jumping jacks affect the rate of respiration and the heart rate per minute in teenagers aged 17-18? Background Information: Different types of activity will have a different effect on the rate of respiration as well as the heart rate because of certain factors. These include the level of intensity and difficulty of the exercise, as well as determining whether it is an aerobic or anaerobic activity. Aerobic respiration requires the presence of oxygen. (Haldane, […]

Photosynthesis Vs. Cellular Respiration the Major Processess in a Global Balance

There are two key processes that occur in nature to obtain energy, they are photosynthesis and cellular respiration. The derivative of the word photosynthesis is the process in which energy of sunlight is converted by plants to store chemical energy in carbohydrate bonds. Photosynthesis is known to be performed by plants, as is cellular respiration. Cellular respiration is organisms obtaining energy from a conversation that releases energy when oxygen is present. These two processes work together hand in hand as […]

Should Fracking be Allowed in the US?

Should fracking be allowed in the US? Fracking is the process of injecting liquid at high pressure into subterranean rocks, boreholes, etc., so as to force open existing fissures and extract oil or gas. Fracking has many benefits to but it also has some environmental concerns as well. Fracking has a low chance of it going bad but the when it does go wrong it is a disaster. It affects many of its surroundings and has many chemicals that are […]

Characterization of Melba Beals

Rosa Parks once proclaimed, I would like to be known as a person who is concerned about freedom and equality and justice and prosperity for all people. These same ideas could be spoken about Melba Pattillo Beals, a black girl who lived in Little Rock, Arkansas, an extremely segregated town. She was chosen as one of The Little Rock Nine to integrate Central High School and help the town evolve with freedom and equality. She eventually understands that this is […]

Development of Science in 17th and 18th Century

Science is defined as intellectual and practical actives that involve systematic organization of knowledge obtained through observations and experiment. 17th and 18th centuries are periods where we see human being conducting thorough scientific research which has seen been tested and proven real. It is also through these sessions that technological changes were significantly observed ranging from Revolution of Ideas, a discovery of new machines, widespread of scientific knowledge through learning institutions, improvement in speed work and Institutionalization of well discussed […]

Process of Photosynthesis

Presentation Photosynthesis, process by which green plants and certain different living beings utilize the vitality of light to change over carbon dioxide and water into the basic sugar glucose. In this manner, photosynthesis gives the fundamental vitality source to basically all life forms. A critical result of photosynthesis is oxygen, on which most living beings depend. Photosynthesis happens in green plants, ocean growth, green growth, and certain microscopic organisms. These living beings are veritable sugar plants, creating a huge number […]

Idea of Photosynthesis by Jan Ingenhousz

To begin, the idea of photosynthesis was created by, according to Encyclopaedia Britannica, ""A Dutch scientist, Jan Ingenhousz. (Ingenhousz 1.) He was born in the Netherlands on December 8, 1730. Ingenhousz, is most known for his discovery of photosynthesis. According, to Encyclopedia Britannica, ""Ingenhousz discovered that light is necessary for photosynthesis, only the green parts of the plant perform photosynthesis, and all living parts of the plant can potentially damage the air."" (Ingenhousz 1.) Photosynthesis occurs in two steps inside […]

Air Pollution Scrubber

Introduction Air pollution in urban areas has become an issue affecting human health to a degree unprecedented in human history. The World Health Organization (WHO) recently prioritized the reduction of air pollution, citing: An estimated 4.2 million premature deaths globally are linked to ambient air pollution, mainly from heart disease, stroke, chronic obstructive pulmonary disease, lung cancer, and acute respiratory infections in children. Worldwide ambient air pollution accounts for: 29% of all deaths and disease from lung cancer. (World Health […]

Green Synthesis of Silver Nanoparticles by Using Various Plants Leaves

Abstract In the present experimental work, a rapid and simple method was applied for the synthesis of silver nanoparticles using different types of medicinal plants, viz. Sphagneticola trilobata, Catharanthus roseus, Azadirachta indica, and Dalbergia sissoo. The aqueous leaf extracts of these plants were used as both the reducing agent and the capping agent for silver nanoparticles synthesis. The green synthesis of silver nanoparticles (AgNPs) was characterized by UV-Visible spectroscopy. The UV-Visible spectrophotometer showed surface plasmon absorbance peaks in the range […]

Exploring the Intricacies of Genetics through DNA

Introduction The hereditary molecule that is tasked with carrying genetic instructions that are used in all living things in development, growth, reproduction and functioning is referred to as deoxyribonucleic acid (DNA). DNA molecules consist of two strands which are bipolar and are mostly coiled near to one another to form a spiral. This strands are referred to as polynucleotides simply because they are made of small units known as nucleotides. The information of the DNA is stored in this nucleotides. […]

Photosynthesis and Energy

Energy is very important and plays a substantial role in life itself, but where does energy come from, and how does energy work? Of course, the answer is simple: photosynthesis. With this reading, you will learn what photosynthesis is, how it works, the energy it creates, and how energy is stored and used. Finally, you will learn about different types of energy and the benefits those energy sources have. The process of photosynthesis begins when a plant receives carbon dioxide […]

The Unsustainability of Fracking

Over the last ten years, America has experienced an energy revolution. Energy consumption has never been higher and the majority of this consumption is supplied by fossil fuels such as coal and oil or natural gas. In order to compensate the high energy demand, most conventional natural resources in the United States have been exhausted. Therefore, prices of natural gas and other fossil fuels are continuing to rise. In an attempt to increase oil and gas production and lower prices, […]

How to Relieve Global Warming by Carbon Dioxide Capture and Storage

Introduction 'US President Donald Trump has cast doubt on a report by his own government warning of devastating effects from climate change.' (BBC News,26 November 2018) Several months ago, Donald Trump claims that the America exit 'Paris Agreement' because he think Global Warming is the lie of the scientists. Does he is true? The tables below show: 'On the Linearity of Local and Regional Temperature Changes from 1.5°C to 2°C of Global Warming.' Fig. 1. 30% rise in atmospheric CO2 […]

Environmental Heavy Metals on Diabetes Mellitus Type II

ADVERSE HEALTH EFFECTS OF ENVIRONMENTAL HEAVY METALS ON DIABETES MELLITUS (TYPE II) AMONG TANNERY WORKERS IN VELLORE DISTRICT 1.0. INTRODUCTION Health is a vital aspect of life, determined by controlled lifestyle activities. These include cleanliness, appropriate nutrition, hygiene, and the overall environment. Disruptions in any of these factors can lead to ill-health. Independent or combined changes in lifestyle, genetic traits, heredity, and environment may result in a life-threatening disorder or metabolic syndrome called diabetes. Diabetes mellitus has undergone a notable […]

Characterization and Utilization of Bio-char

1.1 Municipal Sewage Sludge (MSS) Sludge consists of various elements such as waste, organic and inorganic compounds, which are disposed into the atmosphere and are harmful to it. Sludge contains different pollutants and solid waste, including heavy metals, large organic solids, calcium, magnesium, metal sulphides, heavy metal organic complexes, precipitated soaps and detergents, biomass, and precipitated phosphates. Methods of sludge treatment involve stabilization and dewatering residue. Various types of unit processes and operations are used for the management of the […]

Long-Term Affects of Wastewater in Disposal Sites from Fracking

Overview This article discusses a study done at Penn state into the long-term affects of wastewater in disposal sites from fracking. In 2011, water and sediment downstream of fracking disposal sites was discovered to still contain unsafe levels of some chemicals, despite the water being treated, and had become radioactive. This had contaminated drinking water and aquatic life in the river, causing die-off of some present species. Due to this discovery, fracking wastewater was no longer treated and released back […]

Characterization and Application of Protease Enzyme from Oceanobacillus Iheyensis KB7

RESULTS Molecular identification of bacteria The 16S rRNA gene of the Oceanobacillus iheyensis strain was amplified using Polymerase Chain Reaction (PCR) with the help of 16S rRNA Universal primers. The 16S rRNA gene sequences were submitted to the BANK it and the ID number is (O. iheyensis _ MF192763). The Phylogenetic relationship was obtained using neighbor joining by pair wise comparison among the 16S rRNA gene sequence of selected isolate with species. The dendrogram was constructed for their Phylogenetic relationship […]

Characterization Testing and Applications of Composite Materials

Composite materials, as the name indicates, is a combination of at least two different materials combined together in a unit that has various properties. Namely, if a composite material is made out of different materials, then each material will keep its specific and unique properties- and this is what makes composite materials versatile and applicable for various engineering projects. Composite materials can have their strength increased if they are additionally reinforced with particulates or fibers. Particulates reinforcement is not the […]

X-Ray Diffraction Characterization

X-ray diffraction (X-RD) technique has been ever adapted to recognize structural properties of materials and to get information like crystal structure/phase, lattice parameters, crystallite size, orientation of single crystals, preferred orientation of polycrystals, defects, strains and so on. The technique has found to be employed to study the thin films, bulk and nanomaterials [50]. Principle of X-Ray Diffraction According to the Bragg’s law, diffraction occurs when light is scattered by a periodic array with long-range order, producing constructive interference at […]

Electrochamical Characterization of Bovine Serum Albumin on Phenoli Coated Nickel Titanium

Blood-material interactions are critical for the performance and biocompatibility of biomedical devices, implanted in thousands of patients every day. When an implant is introduced into the body, both protein adsorption and the activation of complement proteins occur [1-3]. A series of interactions happen [4], where firstly, water molecules reach the surface of the implant and build a water shell around it on a timescale that is of the order of nanoseconds. The interaction of the water molecules with the surface […]

Characterization of Amyloid Fibrils and Protective Effects of Silibinin

Amyloid fibrils are abnormal, fibrous protein deposits that grow on the outer membrane of the cells. They are insoluble and do not function to provide structural support or motility in humans. Amyloids are known to show major impact on diseases like Alzheimer’s and type II diabetes which progress over a period of time and are associated with high mortality (1). There are no effective treatments known for amyloid-related diseases, therefore, searching for compounds that can effectively inhibit the formation of […]

What do you Know about Fracking?

What do you know about fracking? Some oppose it and some think it is our solution for a better economy. Companies are trying to make it more popular for the economy, and for their company. In this essay, you will learn more about fracking and what it does. So, what is hydraulic fracturing? Hydraulic fracturing is also known as fracking. Fracking in a process in which oil and gas companies drill in to the ground. The drilling done is to […]

Large-Area Synthesis of Graphene Films Transfer Process

Recently, much attention has turned to the structural and electronic properties of carbon-based materials. At present, especially, graphene is the hottest topics in condensed-matter physics and materials science. This is because graphene has not only unusual properties regarding extreme mechanical strength, thermal conductivity and 2-diemensional films, but also peculiar electronic characteristics such as Dirac-particles with a linear dispersion, transport energy gap and simply absorption coefficient of lights (Geim & Novoselov, 2007; Nair et al., 2008). These unique properties mean it […]

Applications of Large Scale Graphene

Graphene for nanoelectronics Graphene shows a glaring ambipolar electric field effect such that charge carriers can be tuned continuously between electrons to holes. Single layer graphene atop a thermally grown SiO2 layer on a highly doped Si substrate may serve as a prototype of a field effect transistor. Under this configuration SiO2 serves as an insulating layer, so a back-gate voltage can be applied to vary carrier concentration (figure 11b). Early graphene FET devices demonstrated by Novoselov exhibited dopant concentrations […]

Transmission Electron Microscopy Techniques

In this study, the researchers cultured 42GPA9 and HeLa cells on the cover slide for one day and transfected with Cx43-GFP. The researchers applied high-resolution microscopy to study the cells. Also, they used computer software to study the cells. The JEM-2100 Transmission Electron Microscope is a machine that provides the solution for a broad are of problems in the area of biological sciences, materials, and Nano electronics. The JEM-2100 is precisely very simple to use as it has a system […]

Air Quality and Climate Change Research

Air pollution is a mixture of solid particles, such as car emissions and dust, and gases mixed in the air. It has many critical effects on a country as it may affect people’s health by causing severe asthma and heart disease. The principal cause of air pollution is the high emission of sulfur dioxide (SO2) which results from the burning of sulfur that contains fossil fuels such as coal and petroleum. Kuwait is extremely dependent on oil production thus that’s […]

A Novel Therapeutic Strategy for HER2 Breast Cancer by Nanoparticles Combined with Macrophages

Abstract:In recent years, the cell membrane bionic nanoparticles as a new drug delivery system is widely used in small molecule drugs, vaccines and targeted delivery of macromolecular drugs, because of its inherited the specific receptors on the cell membrane and membrane proteins can be used to implement specific targeted delivery, and the tumor showed a good treatment effect on the disease such as model, this topic with a huge bite cell membrane of the role of tumor capture, chemical modification, […]

Related topic

Additional example essays.

• Compare And Contrast In WW1 And WW2
• Followership and Servant Leadership
• Why Abortion Should be Illegal
• Death Penalty Should be Abolished
• Research Paper #1 – The Trail of Tears
• A Class Divided
• A Reflection on Mental Health Awareness and Overcoming Stigma
• Nature vs Nurture Psychology Debate
• The Significance of Following Orders in Daily Life and the Fire Service
• What Caused the Fall of the Western Roman Empire
• Museums Should Not Be Free
• The Beauty is in the Eye of the Beholder

How to Write Essay About Chemistry

Chemistry, transcending the bounds of a mere topic, emerges as a comprehensive subject deeply rooted in the STEM field, where its intricate and often abstract concepts can pose substantial challenges to understanding. Students regularly encounter complex chemistry homework assignments that test their grasp of the subject, leading to difficulties that can be overwhelming. Recognizing these academic hurdles, PapersOwl extends its scope beyond the realm of essay writing to provide specialized assistance in chemistry homework . Our service is tailored to demystify the complexities of chemical reactions, molecular structures, and theoretical concepts, offering students the support and guidance they need. By leveraging our expertise, students can navigate the challenging aspects of chemistry with greater ease and confidence, ensuring they not only complete their homework but also deepen their understanding of this fundamental scientific discipline.

Composing an essay on chemistry requires a blend of scientific knowledge, analytical skills, and the ability to communicate complex ideas effectively. Here’s a guide to help you navigate the process of writing a chemistry essay:

Understanding the Essay Topic

Begin by clearly understanding the specific aspect of chemistry you are tasked with exploring. Chemistry is a broad field that encompasses organic, inorganic, physical, analytical, and biochemistry. Determine the focus of your essay, whether it's discussing a chemical reaction, exploring a chemical theory, analyzing a laboratory experiment, or examining the impact of a chemical discovery.

Conducting Comprehensive Research

In-depth research forms the backbone of a good chemistry essay. Utilize credible sources such as scientific journals, chemistry textbooks, and authoritative online resources. Pay close attention to recent research findings, experiments, and theoretical developments in the field. Take detailed notes on relevant chemical processes, reactions, formulas, and experiments that align with your topic.

Developing a Clear Thesis Statement

Your thesis statement should succinctly present the main argument or objective of your essay. In chemistry, this could be an assertion about a chemical principle, the importance of a discovery, or the implications of a particular research finding. Ensure that your thesis is focused, specific, and directly related to the chemistry topic you are discussing.

Planning Your Essay Structure

Organize your essay in a logical and coherent manner. Start with an introduction that sets the context for your topic and presents your thesis statement. In the body, divide your main arguments or points into paragraphs, each focusing on a specific aspect supported by scientific evidence. Conclude by summarizing your main points and restating your thesis in light of the discussion.

Writing the Essay

Use clear and precise language, and explain chemical terms and concepts for clarity. Chemistry essays often involve detailed descriptions of processes and reactions, so it's important to be accurate and thorough. Present your arguments logically, supported by data, experiments, and theoretical explanations. Be analytical and critical, particularly when discussing the implications or applications of chemical principles.

Incorporating Scientific Data and Examples

Chemistry essays may include scientific data, chemical formulas, and graphical representations. Ensure that all such elements are accurately presented and relevant to your argument. Use examples and case studies to illustrate your points, and explain how they support your thesis.

Citing Your Sources

Proper citation is crucial, especially when referring to experimental data, chemical properties, or theories developed by others. Use an appropriate citation style (like ACS, APA, or MLA) and consistently cite all your sources, including figures and diagrams.

Editing and Proofreading

Review your essay for clarity, coherence, and logical flow of ideas. Check for accuracy in your chemical descriptions and ensure that your analysis is thorough. Proofread for grammar, spelling, and formatting issues. It's often helpful to have someone else read your essay, as they might catch errors or unclear sections you missed.

Writing an essay about chemistry involves understanding complex scientific concepts and effectively communicating them in a structured and insightful manner. By thoroughly researching your topic, organizing your essay logically, and presenting your arguments with precision and clarity, you can create a compelling chemistry essay that showcases your understanding and insights into this fascinating field.

1. Tell Us Your Requirements

2. Pick your perfect writer

3. Get Your Paper and Pay

Hi! I'm Amy, your personal assistant!

Don't know where to start? Give me your paper requirements and I connect you to an academic expert.

short deadlines

100% Plagiarism-Free

Certified writers

Unsure where to start when it comes to your Chemistry revision? With these revision resources you will know exactly what to focus on and how to structure your revision so that you can be exam ready in no time. Here you’ll find clear revision notes, Chemistry past papers, typical exam questions, fully-explained model answers, and more. Just select your qualification level ((I)GCSE, A Level, IB) and exam board below, and dive into everything you’ll need to study smarter, not harder.

Introducing Flashcards

Focus on your weakest topics and revise bitesized content with our new Flashcards feature.

Chemistry A Level Resources

Choose your Chemistry Exam Board

AQA Resources

Cie resources, edexcel resources, ocr resources, wjec resources, chemistry b (salters) a level resources, chemistry ap resources, college board resources, chemistry as resources, chemistry advanced higher resources, sqa resources, chemistry gcse resources, ocr gateway resources, chemistry b (twenty first century science) gcse resources, chemistry: combined science gcse resources, chemistry higher resources, chemistry ib resources, hl resources, sl resources, chemistry: hl ib resources, dp resources, chemistry: sl ib resources, chemistry igcse resources, oxford aqa resources, chemistry (modular): unit 1 igcse resources, chemistry (modular): unit 2 igcse resources, chemistry: co-ordinated sciences (double award) igcse resources, chemistry: double science igcse resources, chemistry international a level resources, chemistry international as resources, chemistry national 5 resources, chemistry o level resources, cambridge resources, chemistry pre u resources, articles and resources for chemistry students.

How to tackle the more challenging GCSE Chemistry Topics?

Is A Level Chemistry Hard?

How to get a grade 9 in gcse chemistry, how to answer required practical method questions in aqa gcse science, how to revise computer science a level.

Advanced Level Chemistry 2022 Marking Scheme

Related Posts

• Aptitude Tests (33)
• Architecture (10)
• Articles (1)
• B.Design (6)
• Biology Marking (14)
• Biology Marking (English Medium) (5)
• Biology Notes (5)
• Biology Papers (45)
• Biology Papers (English Medium) (5)
• Chemistry Marking (19)
• Chemistry Marking (English Medium) (7)
• Chemistry Notes (16)
• Chemistry Papers (54)
• Chemistry Papers (English Medium) (5)
• Colombo Uni (5)
• Combined Maths Marking (14)
• Combined Maths Marking (English Medium) (3)
• Combined Maths Notes (5)
• Combined Maths Papers (97)
• Combined Maths Papers (English Medium) (21)
• Fashion Design (13)
• General English (5)
• German Tech (2)
• GIT Notes (10)
• GIT Papers (8)
• Higher Mathematics (7)
• ICT Marking (11)
• ICT Marking (English Medium) (3)
• ICT Notes (37)
• ICT Papers (11)
• ICT Papers (English Medium) (9)
• Irrigation Technology (1)
• Japura Uni (1)
• Kelaniya Uni (9)
• Model Papers (67)
• Moratuwa Uni (7)
• NDES / TTI (17)
• Nursing (3)
• Ocean Uni (1)
• Open Uni (2)
• Palath Papers (96)
• Physical Science (2)
• Physics Marking (18)
• Physics Marking (English Medium) (6)
• Physics Notes (5)
• Physics Papers (49)
• Physics Papers (English Medium) (5)
• Rajarata Uni (4)
• Resource Books (4)
• Resource Books (English medium) (4)
• Sabaragamuwa Uni (1)
• Scholarships (1)
• School Papers (138)
• UNIVOTEC (5)
• Uva Uni (15)
• Vidyapeeta (1)

• History & Society
• Science & Tech
• Biographies
• Animals & Nature
• Geography & Travel
• Arts & Culture
• Games & Quizzes
• On This Day
• One Good Fact
• New Articles
• Lifestyles & Social Issues
• Philosophy & Religion
• Politics, Law & Government
• World History
• Health & Medicine
• Browse Biographies
• Birds, Reptiles & Other Vertebrates
• Bugs, Mollusks & Other Invertebrates
• Environment
• Fossils & Geologic Time
• Entertainment & Pop Culture
• Sports & Recreation
• Visual Arts
• Demystified
• Image Galleries
• Infographics
• Top Questions
• Britannica Kids
• Saving Earth
• Space Next 50
• Student Center
• Introduction & Top Questions
• Analytical chemistry
• Inorganic chemistry
• Organic chemistry
• Biochemistry
• Polymer chemistry
• Physical chemistry
• Industrial chemistry
• Atoms and elements
• Ionic and covalent bonding
• Basic factors
• Energy and the first law of thermodynamics
• Entropy and the second law of thermodynamics
• Rates of reaction
• Chemistry and society
• Philosophy of matter in antiquity
• Phlogiston theory
• The chemical revolution
• Atomic and molecular theory
• Organic radicals and the theory of chemical structure
• Mendeleev’s periodic law
• The rise of physical chemistry
• Electronic theories of valence
• Biochemistry, polymers, and technology
• The instrumental revolution
• Organic chemistry in the 20th century
• Chemistry in the 21st century

Our editors will review what you’ve submitted and determine whether to revise the article.

• Khan Academy - Introduction to chemistry
• Stanford Encyclopedia of Philosophy - Philosophy of Chemistry
• LiveScience - What is Chemistry?
• UNESCO - Chemistry: How it all started
• Chemistry LibreTexts - What is Chemistry?
• The Victorian Web - Chemistry Timeline, 1755-1901: Victorian Chemistry in Context
• chemistry - Children's Encyclopedia (Ages 8-11)
• chemistry - Student Encyclopedia (Ages 11 and up)
• Table Of Contents

What is chemistry?

Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds , how they can change, and the energy that is released or absorbed when they change.

How are chemistry and biology related?

Chemistry is the study of substances—that is, elements and compounds —while biology is the study of living things. However, these two branches of science meet in the discipline of biochemistry , which studies the substances in living things and how they change within an organism.

chemistry , the science that deals with the properties, composition , and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes. Every substance, whether naturally occurring or artificially produced, consists of one or more of the hundred-odd species of atoms that have been identified as elements. Although these atoms, in turn, are composed of more elementary particles, they are the basic building blocks of chemical substances; there is no quantity of oxygen , mercury , or gold , for example, smaller than an atom of that substance. Chemistry, therefore, is concerned not with the subatomic domain but with the properties of atoms and the laws governing their combinations and how the knowledge of these properties can be used to achieve specific purposes.

The great challenge in chemistry is the development of a coherent explanation of the complex behaviour of materials, why they appear as they do, what gives them their enduring properties, and how interactions among different substances can bring about the formation of new substances and the destruction of old ones. From the earliest attempts to understand the material world in rational terms, chemists have struggled to develop theories of matter that satisfactorily explain both permanence and change. The ordered assembly of indestructible atoms into small and large molecules , or extended networks of intermingled atoms, is generally accepted as the basis of permanence, while the reorganization of atoms or molecules into different arrangements lies behind theories of change. Thus chemistry involves the study of the atomic composition and structural architecture of substances, as well as the varied interactions among substances that can lead to sudden, often violent reactions.

Chemistry also is concerned with the utilization of natural substances and the creation of artificial ones. Cooking , fermentation , glass making, and metallurgy are all chemical processes that date from the beginnings of civilization. Today, vinyl, Teflon, liquid crystals, semiconductors , and superconductors represent the fruits of chemical technology. The 20th century saw dramatic advances in the comprehension of the marvelous and complex chemistry of living organisms, and a molecular interpretation of health and disease holds great promise. Modern chemistry, aided by increasingly sophisticated instruments, studies materials as small as single atoms and as large and complex as DNA (deoxyribonucleic acid), which contains millions of atoms. New substances can even be designed to bear desired characteristics and then synthesized. The rate at which chemical knowledge continues to accumulate is remarkable. Over time more than 8,000,000 different chemical substances, both natural and artificial, have been characterized and produced. The number was less than 500,000 as recently as 1965.

Intimately interconnected with the intellectual challenges of chemistry are those associated with industry. In the mid-19th century the German chemist Justus von Liebig commented that the wealth of a nation could be gauged by the amount of sulfuric acid it produced. This acid, essential to many manufacturing processes, remains today the leading chemical product of industrialized countries. As Liebig recognized, a country that produces large amounts of sulfuric acid is one with a strong chemical industry and a strong economy as a whole. The production, distribution, and utilization of a wide range of chemical products is common to all highly developed nations. In fact, one can say that the “iron age” of civilization is being replaced by a “polymer age,” for in some countries the total volume of polymers now produced exceeds that of iron .

The scope of chemistry

The days are long past when one person could hope to have a detailed knowledge of all areas of chemistry. Those pursuing their interests into specific areas of chemistry communicate with others who share the same interests. Over time a group of chemists with specialized research interests become the founding members of an area of specialization. The areas of specialization that emerged early in the history of chemistry, such as organic, inorganic, physical , analytical , and industrial chemistry, along with biochemistry , remain of greatest general interest. There has been, however, much growth in the areas of polymer, environmental, and medicinal chemistry during the 20th century. Moreover, new specialities continue to appear, as, for example, pesticide, forensic , and computer chemistry.

Get the Most Legit Information and Guide on the Latest Jobs in Nigeria, Facebook and Education Here

WAEC Chemistry Questions and Answers for 2023/2024 (Theory and Objectives)

2023 WAEC Chemistry Answers, WAEC Chemistry questions and answers, WAEC Chemistry questions and everything you need to know about 2023 WAEC Chemistry Examination will be provided in this article. You will find Chemistry Paper 1 (Objective) and Chemistry 2 (Essay) here

Scroll to the bottom for today’s Chemistry Answers

Below are the WAEC Chemistry questions. Read them and get ready to score high in your WAEC Chemistry exam.

The West Africa Examination Council (WAEC) is an examination body in Nigeria that conducts the Senior Secondary Certificate Examination and the General Certificate in Education in May/June and November/December respectively.

Table of Contents

WAEC Chemistry Questions and Answers 2023

WAEC Chemistry Questions and Answers 2023 Loading…

The 2023 answers will be posted here on 24th May during the exam

WAEC Chemistry OBJ Answers Loading…

1-10: ACADABBDAC

11-20: BCAABBCCBB

21-30: ACBABDACBB

31-40: ABBDAADCDD

41-50: BDCDDCDDCD

A transition element, also known as a transition metal, is an element that belongs to the d-block of the periodic table.

(i) Element B (2:8:2)

(ii) Element C (2:8:1)

The increase in the first ionization energies across a period is mainly due to the increasing effective nuclear charge and decreasing atomic radius. The stronger pull from the increasing nuclear charge and the closer proximity of the electrons to the nucleus make it harder to remove an electron, leading to higher ionization energies.

Number 1di)

Two examples of aliphatic compounds are:

A. Ethane (C2H6): Ethane is a saturated hydrocarbon belonging to the alkane family. It consists of a straight chain of two carbon atoms bonded to each other, with six hydrogen atoms attached to the carbons.

B. Butanol (C4H10O): Butanol is an alcohol with a four-carbon straight chain. It has the chemical formula C4H10O and exists in four isomeric forms: n-butanol (normal butanol), sec-butanol (secondary butanol), isobutanol (isopropyl alcohol), and tert-butanol (tert-butyl alcohol).

*Reaction between Iron (Fe) and Dilute H2SO4:*

Iron reacts with dilute sulfuric acid to form iron sulfate (FeSO4) and hydrogen gas (H2). The balanced chemical equation for this reaction is:

3Fe(s) + 4H2SO4(aq) -> 3FeSO4(aq) + 2H2(g) + 2H2O(l)

In this reaction, iron displaces hydrogen from the acid, resulting in the production of iron sulfate and hydrogen gas. The iron sulfate is soluble in water and remains in solution, while the hydrogen gas is released as a gas.

*Reaction between Aluminum (Al) and Dilute H2SO4:*

Aluminum reacts differently with dilute sulfuric acid due to the protective oxide layer that forms on its surface. The oxide layer prevents further reaction by acting as a barrier between the aluminum metal and the acid. However, the reaction can occur if the protective layer is disrupted or removed

2Al(s) + 3H2SO4(aq) -> Al2(SO4)3(aq) + 3H2(g)

In this reaction, aluminum sulfate (Al2(SO4)3) and hydrogen gas are produced. The aluminum sulfate formed is soluble in water and remains in solution, while the hydrogen gas is liberated as a gas.

More Answers Loading…

—————————————————————-

—————————————————–

The questions below are the WAEC Chemistry Questions. Go through them and be ready to score high in your WAEC 2023 Chemistry Examination.

1. What condition favours the formation of the product for the endothermic reaction, N2O4(g) —><—– 2NO2(g)

A. Decrease in pressure

B. A decrease in volume

C. An increase in pressure

D. A constant volume

ANSWER: A ( Decrease in pressure)

2. How many alkoxy alkanes can be obtained from the molecular formula C 4 H 4 O 4

ANSWER: C (3)

3. Element Y has two isotopes Y and Y present in the ratio 1:3. The relative atomic mass of Y would be

ANSWER: C (21.5)

4. 100.0g of KClO 3 was added to 40.0 cm^3 of water to give a saturated solution at 298K. If the solubility of the salt is 20.0 moldm^-3 at 298K, what percentage of the salt is left undissolved? {K= 39, Cl = 35.5, O = 16}

5. Elements X and Y have electronic configuration 1S 2 2S 2 2P 4 and 1S 2 2S 2 2P 6 3S 2 3P 1 respectively. When they combine the formula of the compound formed is

ANSWER: B (Y 2 X 3 )

Recommended: WAEC Timetable

6. A solution of 0.20 mole of NaBr and 0.20 mole of MgBr 2 in 2.0 dm 3 of water is to be analysed. How many moles of Pb(NO 3 ) 2 must be added to precipitate all the bromide as insoluble PbBr 2

A. 0.30 mol

B. 0.10 mol

C. 0.20 mol

D. 0.40 mol

ANSWER: A (0.30 mol)

7. Na 2 CO 3 + HCl —-> NaHCO 3 + NaCl. The indicator most suitable for this reaction should have pH equal to.

ANSWER: D (9)

8. A satuarted solution of silver trioxocarbonate (IV), was found to have concentration of 1.30 x 10 -5 moldm -3 . The solubility product of the trioxocarbonate (IV) is

A. 8.79 x 10 -15

B. 1.69 x 10 -10

C. 1.82 x 10 -11

D. 9.84 x 10 -10

ANSWER: A (8.79 x 10 -15 )

9. When platinum electodes are used during the electrolysis of copper (II) tetraoxosulphate (IV) solution, the solution gets progressive

D. Atmospheric

ANSWER: A (Acidic)

10. Tetraoxosulphate (VI) ions are final test using

A. acidified silver nitrate

B. acidic barium chloride

C. lime water

D. dilute hydrochloric acid

ANSWER: D (dilute hydrochloric acid)

• WAEC Physics Questions and Answers
• WAEC Biology Questions and Answers
• WAEC English Questions and Answers

WAEC 2020 Chemistry Theory Questions

Paper 2 (essay).

1. Identify the solid remaining when each of the following is heated. (a) lithium trioxonitrate (V) (b) potassium trioxonitrate (V) (c) calcium trioxonitrate (V)

2. (a) When calcium oxide and coke are heated in an electric furnace, the products are carbon (ii) oxide and calcium carbide (CaC2), write the equation for this reaction.

(b) The addition of water to calcium carbide leads to the formation of calcium hydroxide and ethyne. Write the equation for the production of ethyne.

5. The first ionization energy of chlorine is +1260KJmol-1. (a) Define the term first ionization energy. (b) State and explain the general trend in the values of the first ionization energy for the elements across the period, sodium to argon in the periodic table.

7. State two factors other than a change in temperature or the use of a catalyst that influence the rate of a chemical reaction.

1. (a) Two elements represented by the letters Q and R have atomic numbers 9 and 12 respectively. (i) Write the election configuration of R. (ii) To what group does Q belong in the periodic table. (iii) Write the formula of the compound formed when Q combines with R. (iv) Explain briefly, why Q is a good oxidizing agent. (v) State whether R would be expected to form acidic or basic oxide. (b) (i) State two assumptions of the kinetic theory of gases. (ii) When some solids are heated, they change directly into the gaseous state. What name is given to this phenomenon? (iii) List two substances which exhibit the phenomenon mentioned in (ii). (iv) Write an expression to show the mathematical relationship between the rate of diffusion of a gas and its vapour.

2. An aqueous solution has a pH of 4.0. (a) (i) What is the hydrogen ion concentration of the solution? (ii) What effect will it have on litmus paper? (iii) Which of the following salt solutions would have the same effect on litmus? Give a reason for your answer. NH4Cl(aq); NaCl(aq) ; CH3OON(aq). (b) (i) Differentiate between a fine chemical and a heavy chemical. (ii) Name two sources of air pollution. (iii) Suggest one way of reducing air pollution in cities

3. (a) (i) Explain briefly the fermentation process. (ii) Write a balanced equation for the fermentation of glucose. (iii) What substance must be added to glucose solution to ferment it? (iv) Explain briefly why tightly corked glass filled to the brim with palm wine shatters on standing. (b) State one industrial application of each of the following methods of separation: (i) Crystallization; (ii) Fractional distillation. (c) Explain the following terms: (i) Saponification; (ii) Esterification. (d) Write a balanced equation to illustrate each of the terms in (c). (e) i) What is hydrocarbon compound? (ii) Name two principal sources of hydrocarbons.

WAEC Chemistry Essay and Objective 2023 (EXPO)

The above questions are not exactly 2023 WAEC Chemistry questions and answers but likely WAEC Chemistry repeated questions and answers.

These questions are for practice. The 2023 WAEC Chemistry expo will be posted on this page during the WAEC Chemistry examination. Keep checking and refreshing this page for the answers.

Keep reloading this page for more answers

Tips to Pass WAEC Chemistry Questions

1. study hard.

It is known to everyone that hard work brings success. Ensure to read the chemistry textbooks recommended by The West Africa Examination Council (WAEC).

This will help you to take a look at most of the questions you will see on the day of WAEC Chemistry examination.

Let me clearly state that questions are not imported from heaven but from those textbooks recommended by WAEC.

2. Read WAEC Chemistry Past Questions

WAEC usually picks questions from the previous years to form fresh questions. Studying WAEC Chemistry past questions would give you an idea of how WAEC Chemistry questions are set.

3. Start Preparing for WAEC 2023 :

Stop wasting your time. Now that you have gotten textbooks and past questions, the next thing is to begin your reading. Early reading and practice is good for you; you will pass well on WAEC 2023 Chemistry

4. Solve and try to understand every example and exercise you see in textbooks

It is very unfortunate that Secondary school students are fond of skipping exercises and even examples while studying textbooks.

They loved notebooks so much that they could ask, “can I read my Chemistry notebook and pass WAEC 2023?”. Don’t be scared of attempting exercises; they are there to help you. Face it and overcome it!

5.  Practise Regularly

Don’t get discouraged when certain topics are annoying, keep on practicing until you master everything. Never give up and never say never. Keep pushing….

If you have any questions about WAEC Chemistry Questions and Answers for 2023, kindly drop your question in the comment box and please, remember to share this information by clicking the Facebook share icon or any of the social media share icons below.

Last Updated on May 24, 2023 by Admin

Related posts:

144 thoughts on “WAEC Chemistry Questions and Answers for 2023/2024 (Theory and Objectives)”

Can we get waec questions for 2024 pls?

Sir pls send me the past question and answer i beg Sir pls send me the past question and answer i beg sir

I need number four question please

Pls upload the waec chemistry questions

Pls this this are correct very correct this is what came out in chemistry

Pls sir, i need the questions on civic education tomorrow

Pls sir send me waec question and answer for this year

Please sir i will like You to send waec 2023 chemistry theory and essay

Thanks u alot sir But I need waec chemistry around 9am Please update me soon

Leave a Comment Cancel reply

Save my name, email, and website in this browser for the next time I comment.

Notify me of follow-up comments by email.

Notify me of new posts by email.

• Combined Maths
• Agricultural Science
• Business Studies
• Business Statistics
• Christianity
• Buddhist Civilization
• Drama and Theatre
• Political Science
• General English
• Agriculture
• Home Economics
• Indian History
• Sri Lankan History
• Grade 11 Papers
• Grade 10 Papers
• Grade 09 Papers
• Grade 08 Papers
• Grade 07 Papers
• Grade 06 Papers
• Scholarship Exam Past Papers
• Scholarship Model Papers
• Environment
• Mathematics
• Sinhala Language
• Tamil Language
• Catholicism
• Grade 11 English Medium
• Grade 10 English Medium
• Grade 09 English Medium
• Grade 08 English Medium
• Grade 07 English Medium
• Grade 06 English Medium
• Sinhala Medium
• Sinhala Medium Papers
• Sinhala Medium Marking Schemes
• English Medium Papers
• Tamil Medium Papers
• Sinhala Medium Answers
• English Medium
• English Medium Answers
• Tamil Medium
• Sinhala Medim Papers
• Sinhala Medium Marking
• English Medium Marking
• Tamil Medium Marking
• Western Province
• North Western Province
• Southern Province
• North Central Province
• Central Province
• Sabaragamuwa Province
• Royal College
• Ananda College
• D.S.Senanayake
• Devi Balika
• Nalanda College
• Rathnavali Balika
• Visakha College
• Grade 11 Textbooks
• Grade 10 Textbooks
• Grade 9 Textbooks
• Grade 8 Textbooks
• Grade 7 Textbooks
• Grade 6 Textbooks
• WIKI Forum! Join

2010 A/L Chemistry Marking Scheme | Sinhala Medium

Gce advanced level 2010 chemistry sinhala medium paper marking quick download.

2010 A/L Chemistry Marking Scheme in Sinhala Medium. You can download Sinhala medium 2010 AL Chemistry exam answers sheet as a PDF File.

GCE Advanced Level Chemistry Marking Scheme 2010 in Sinhala Medium

Download 2010 A/L Chemistry Marking Scheme in Sinhala Medium. You can download Sinhala medium 2010 AL Chemistry exam answers sheet as a PDF File.

Download Preview

Buy A/L Past Papers Online

Download the Previous A/L Chemistry exam papers and answers sheets :

• 2020 Exam Paper 2020 Paper Marking
• 2019 Exam Paper 2019 Paper Marking
• 2018 Exam Paper 2018 Paper Marking
• 2017 Exam Paper 2017 Paper Marking
• 2016 Exam Paper 2016 Paper Marking
• 2015 Exam Paper 2015 Paper Marking
• 2014 Exam Paper 2014 Paper Marking
• 2013 Exam Paper 2013 Paper Marking
• 2012 Exam Paper 2012 Paper Marking
• 2011 Exam Paper
• 2010 Exam Paper

AL Chemistry answer sheet PDF includes MCQ, Structure, and Essay answers for New & Old Syllabus.

To download an updated list of Chemistry answers sheets   Click Here .

Past papers are the most effective way for students to prepare for the experience of taking an examination. Solving these Past Papers will help you to prepare for your GCE Advanced Level Chemistry  subject. Team Past Papers WiKi provides official A/L past papers and Marking schemes free of charge in the most convenient way.

If you have a question about the 2010 A/L Chemistry Marking Scheme, Join the student’s forum:

You can add a comment below  or contact us on  Facebook . Share this resource with your friends!

Download more past papers from the Department of Examinations website.

Grade 08 Geography 3rd Term Test Paper With Answers 2020 Sinhala Medium – Southern Province

2012 a/l chemistry marking scheme | sinhala medium.

Kaushalya Hemamali

https://forum.pastpapers.wiki/

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Buy Books Online

Pastpapers wiki is a free resource site for O/L and A/L Students In Sri Lanka. Past Papers WiKi was founded in October 2019 by Education Resources.lk. The main goal of this site is to provide Past Papers, Marking Schemes, Notes, and other resources that allow students to improve their knowledge.

https://forum.pastpapers.wiki/ Email:  [email protected]

Become a Volunteer – Help Others 🙋‍♂️

We are currently looking for volunteers who are willing to share their expertise and contribute to our community by sharing educational materials in our forum. We’re looking for individuals who can help us create and share educational materials such as articles, videos, and social media posts that will inspire and educate others.

Share Past Papers 📝 | Help Others 🤝 Join With: https://forum.pastpapers.wiki/

Disclaimer of Past Papers WiKi

This website is continued for your personal appreciation or educational purposes only . All Content of this website is published by extracting the information from online sources such as official government websites, social media, other websites, etc. The copyrights of these contents belong to the responsible owners . If a modification will happen in this information, our website does not assume any responsibility. If you have any questions or suggestions, please contact us.

 – Mobile No:  071-8540371 –  Email:  [email protected]  

• Science stream
• Commerce stream
• Technology stream
• Arts Stream
• Common Subjects
• WIKI Forum!

Copyright 2019 -2021 © All rights reserved.