chemistry topics for presentation class 9

Science Presentation for Class 9

Chapter 1: matter in our surroundings, chapter 2: is matter around us pure, chapter 3: atoms and molecules, chapter 4: structure of the atom, chapter 5: the fundamental unit of life, chapter 6: tissues, chapter 7.1: animal kingdom diversities, chapter 7.1: plant kingdom diversities, chapter 8: motion, chapter 9: force and laws of motion, chapter 10: gravitation, chapter 11: work and energy, chapter 12: sound, chapter 13: why do we fall ill, chapter 14: natural resources, chapter 15: improvement in food resources.

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Unit 3: Atoms and Molecules

Laws of chemical combinations.

• Law of conservation of mass (Opens a modal)
• Law of definite proportions (Opens a modal)
• Laws of chemical combination. Get 3 of 4 questions to level up!

What is an Atom?

• Elements and atoms (Opens a modal)
• Matter, elements, and atoms (Opens a modal)
• Introduction to the atom (Opens a modal)

Molecules and ions

• Introduction to ions (Opens a modal)
• Naming ions and ionic compounds (Opens a modal)
• Molecules and compounds (Opens a modal)
• Naming monatomic ions and ionic compounds (Opens a modal)
• Common polyatomic ions (Opens a modal)
• Naming ionic compound with polyvalent ion (Opens a modal)
• Worked example: Finding the formula of an ionic compound (Opens a modal)
• Worked example: Formula for an ionic compound (Opens a modal)
• Naming ionic compounds Get 3 of 4 questions to level up!
• Find the formula for ionic compounds Get 3 of 4 questions to level up!
• Predicting the formula of the given compound Get 3 of 4 questions to level up!

Molecular mass and mole concept

• Worked example: Calculating Molecular weight (Opens a modal)
• The mole and Avogadro's number (Opens a modal)
• Worked example: Calculating molar mass and number of moles (Opens a modal)
• Converting moles and mass Get 3 of 4 questions to level up!

• NCERT Solutions
• NCERT Class 9
• NCERT 9 Science
• Chapter 4: Structure Of Atom

NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom

Ncert solutions for class 9 science chapter 4 – cbse free pdf download.

NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom at BYJU’S provides students with solutions to all the questions provided in the NCERT Class 9 textbook, recommended by the CBSE board. This article provides students with study material that is crafted by a team of experts with in-depth knowledge of the subject. Solving NCERT Solutions for Class 9 Science  would enable students to score maximum marks in the Class 9 CBSE  Science exam.

Download Exclusively Curated Chapter Notes for Class 9 Science Chapter – 4 Structure of the Atom

Download most important questions for class 9 science chapter – 4 structure of the atom.

The language used while preparing the NCERT Solutions for Class 9 Science by our experts at BYJU’S is simple and easy to understand for the Class 9 students, thereby assisting them in understanding the concept better. The material is crafted on the concept-based approach. These NCERT Solutions are curated keeping in mind the answering method of the CBSE. Hence, the allotment of marks in CBSE examinations is taken into consideration for students to attempt the answers and score maximum marks. The NCERT textbook provided by the board is designed by the panel taking into consideration the latest developments in the field of science and technology.

• Chapter 1 Matter in Our Surroundings
• Chapter 2 Is Matter Around Us Pure
• Chapter 3 Atoms and Molecules
• Chapter 5 The Fundamental Unit of Life
• Chapter 6 Tissues
• Chapter 7 Diversity in Living Organisms
• Chapter 8 Motion
• Chapter 9 Force and Laws of Motion
• Chapter 10 Gravitation
• Chapter 11 Work and Energy
• Chapter 12 Sound
• Chapter 13 Why Do We Fall Ill
• Chapter 14 Natural Resources
• Chapter 15 Improvement in Food Resources

NCERT Solutions for Class 9 Science Chapter 4 – Structure of the Atom

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Access answers to NCERT Class 9 Science Chapter 4 – Structure of the Atom (All in-text and exercise questions solved)

Exercise-4.1 page: 47.

1. What are the canal rays?

The radiations that are positively charged are canal rays. This discovery was crucial in the discovery of another subatomic particle that was positively charged – the proton.

2. If an atom contains one electron and one proton, will it carry any charge or not?

Since a proton is a positively charged particle and an electron is a negatively charged particle, the net charge becomes neutral as both particles neutralise each other.

Exercise-4.2 Page: 49

1. On the basis of Thompson’s model of an atom, explain how the atom is neutral as a whole.

As per Thompson’s model of an atom,

(i) An atom contains a positively charged sphere in which the negatively charged electrons are implanted.

(ii) Electrons and protons are equal in magnitude; hence, an atom, on the whole, is electrically neutral.

2. On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?

As per Rutherford’s model of an atom, the positively charged protons are the ones that are present in the atom.

3. Draw a sketch of Bohr’s model of an atom with three shells.

4. What do you think would be the observation if the ∝– particle scattering experiment is carried out using a foil of a metal other than gold?

In the ∝ – particle scattering experiment, when any other metal foil is used instead of gold, the observation would remain the same. This is because the structure of an atom, when considered individually, remains the same.

Exercise-4.2.4 Page: 49

1. Name the three subatomic particles of an atom.

An atom consists of three subatomic particles:

• Protons  – Positively charged
• Electrons – Negatively charged
• Neutrons – Neutral in nature (no charge)

2. Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?

Given: Atomic mass of helium atom = 4u, 2 protons in helium nucleus

Atomic mass = number of protons + number of neutrons

4 = 2 + number of neutrons

Number of neutrons = 4 – 2 = 2

Hence, Helium has 2 neutrons.

Exercise-4.3 Page: 50

1. Write the distribution of electrons in Carbon and Sodium atoms.

A carbon atom contains a total of 6 electrons. The following equation describes the electron distribution in a carbon atom: first orbit or K-shell = 2 electrons; second orbit or K-shell = 2 electrons; third orbit or K-shell = 2 electrons; fourth orbit or K-shell

L-shell or second orbit = 4 electrons

We can also express the electron distribution in a carbon atom as 2, 4.

In a sodium atom, there are 11 total electrons. The electron distribution in the sodium atom is described by: first orbit or K-shell = 2 electrons; second orbit or K-shell = 2 electrons; third orbit or K-shell = 2 electrons; fourth orbit or K-shell = 2

L-shell or second orbit = 8 electrons

M-shell or third orbit = 1 electron

Alternatively, we can express the electron distribution in a sodium atom as 2, 8, 1.

2. If the K and L shells of an atom are full, then what would be the total number of electrons in the atom?

K shell can hold 2 electrons.

L shell can hold 8 electrons.

Hence, when both the shells are full, the total number of electrons present in the atom = 2+8 = 10 electrons.

Exercise-4.4 Page: 52

1. How will you find the valency of chlorine, sulphur and magnesium?

We know that an element’s valency refers to its proclivity for accepting or losing electrons in order to complete its octet and achieve a stable electronic state.

It is the smallest number of electrons that must be added or removed to entirely occupy an element’s outermost shell.

Mathematically, if an atom’s outermost shell contains 4 or fewer electrons, the element’s valency is equal to the number of electrons present in the outermost shell; if it contains more than 4, the valency is determined by subtracting the total number of electrons present in the outermost shell from 8.

Calculation of valency:

Valency of chlorine: 

The electronic configuration of chlorine = 2, 8, 7

Chlorine has 7 (more than 4) electrons in its outermost shell.

Therefore, the valency of chlorine = 8 – the number of electrons in the outermost shell

Valency of Sulphur: 

The electronic configuration of Sulphur = 2, 8,6

Sulphur has 6 (more than 4) electrons in its outermost shell.

Valency of magnesium: 

The electronic configuration of Magnesium = 2, 8, 2

Magnesium has 2 (less than 4) electrons in its outermost shell.

Therefore, the valency of magnesium= Number of electrons in its outermost shell

 Exercise-4.5 Page: 52

1. If the number of electrons in an atom is 8 and the number of protons is also 8, then

(i) What is the atomic number of the atom? and

(ii) What is the charge on the atom?

Given: Number of electrons = 8

Number of protons = 8

(i) The atomic number of an atom is the same as the number of protons in that atom; hence, its atomic number is 8.

(ii) In an atom, the number of protons is equal to the number of electrons. Hence, both the charges – positive and negative – neutralise each other. Therefore, the atom does not possess any charge.

2. With the help of the given table, find out the mass number of oxygen and sulphur atom.

Table: Composition of Atoms of the First Eighteen Elements with Electron Distribution in Various Shells.

(a) To find the mass number of Oxygen,

Number of neutrons = 8

Atomic number = 8

Atomic mass number = Number of protons + number of neutrons = 8 + 8 = 16

Therefore, the mass number of oxygen = 16

(b) To find the mass number of Sulphur,

Number of protons = 16

Number of neutrons = 16

Atomic number = 16

Atomic mass number = Number of protons + number of neutrons = 16 + 16 = 32

 Exercise-4.6 Page: 53

1. For the symbols H, D and T, tabulate three subatomic particles found in each of them.

The following table depicts the subatomic particles in Hydrogen (H), Deuterium (D), and Tritium(T).

2. Write the electronic configuration of any one pair of isotopes and isobar.

(a) Isotopes: Isotopes are atoms which have the same number of protons, but the number of neutrons differs. This leads to the variation in mass number too.

Example: Carbon molecule exists as 6 C 12 and  6 C 14 , but when their electronic configuration is noticed, both have K-2; L-4

(b) Isobars: Isobars are atoms which have the same mass number but differ in atomic number. The electronic configuration of an isobar pair is as follows:

Example: Electronic configuration of 20 Ca 40 – K-2; L-8; M-8; N- 2

Electronic configuration of 18 Ar 40 – K-2; L-8; M-8

Exercise Page: 54

1. Compare the properties of electrons, protons and neutrons.

2. What are the limitations of J.J.Thomson’s model of the atom?

The following are the limitations of J.J. Thomson’s model of an atom:

• The model failed to explain the outcome of alpha particle scattering, which was conducted by Rutherford. The model failed to depict why the majority of these alpha particles pass through the gold foil, while some diverted through small and big angles, while some others rebound completely, returning on their path.
• It did not provide any experimental evidence and was established on imagination.

3. What are the limitations of Rutherford’s model of the atom?

The following are the limitations of Rutherford’s model of the atom:

• There is no expected stability in the revolution of the electron in a circular orbit.
• Charged particles radiate energy when accelerated, thus causing the revolving electrons to lose energy and would fall into the nucleus.
• Hence, atoms must be highly unstable. The matter would not exist in its known form, which clearly is an assumption as atoms are highly stable.

4. Describe Bohr’s model of the atom.

• An atom holds the nucleus at the centre.
• Negatively charged electrons revolve around the nucleus.
• The atoms in it contain distinct orbits of electrons.
• Electrons do not radiate energy when they are in their orbits.
• The distinct orbits are named K, L, M, and N orbits. Numbers used to denote them are n=1, 2, 3, 4

5. Compare all the proposed models of an atom given in this chapter.

6. Thomson’s Model of Atom.

7. Rutherford’s Model of Atoms.

8. Bohr’s model of the atom.

Summarise the rules for the writing of the distribution of electrons in various shells for the first eighteen elements.

• The maximum number of electrons that can be accommodated in a shell is given by the formula: 2n 2 , where n= 1, 2, 3…
• The maximum number of electrons in different shells are:

K shell – n=1 ; 2n 2 = 2(1) 2 = 2

L shell – n=2 ; 2n 2 = 2(2) 2 = 8

M shell – n=3 ; 2n 2 = 2(3) 2 = 18

N shell- n=4 ; 2n 2 = 2(4) 2 = 32

• The outermost orbit can be accommodated with 8 electrons at the maximum.
• The electrons are not taken in unless the inner shells are filled, which are filled step-wise; hence, the highest element has K-2; L-8; M-8 distribution of electrons.

9. Define valency by taking examples of silicon and oxygen.

The definite combining capacity of the atoms of each element, wherein electrons are lost, gained or shared to make the octet of electrons present in the outermost shell, is defined as valency. To measure valency, we can figure out the number of electrons that are required to complete the shell in which it is contained or losing excess electrons, if present, once the filling is complete.

Example: To find the valency of silicon,

The atomic number of silicon is 14.

The number of electrons is equal to the number of protons in silicon, i.e., 14.

The distribution of electrons in silicon atoms is K – 2, L – 8, M – 4

Hence, from the distribution of silicon, it is clearly evident that to fill the M shell, 4 electrons are required. Therefore, its valency is 8-4=4

To find the valency of oxygen,

The atomic number of oxygen is 8.

The number of electrons is equal to the number of protons in oxygen, i.e., 8.

The distribution of electrons in oxygen atom is K – 2, L – 6

Hence, from the distribution of oxygen, it is clearly evident that to fill the M shell, 6 more electrons are required. Therefore, its valency is 8-6=2

10. Explain with examples

(i) Atomic number,

(ii) Mass number,

(iii) Isotopes and

(iv) Isobars.

Give any two uses of isotopes.

(i) The number of positively charged protons present in the nucleus of an atom is defined as the atomic number and is denoted by Z. Example: Hydrogen has one proton in its nucleus; hence, its atomic number is one.

(ii) The total number of protons and neutrons present in the nucleus of an atom is known as the mass number. It is denoted by A. 20 Ca 40 . The mass number is 40. The atomic number is 20.

(iii) The atoms which have the same number of protons but a different number of neutrons are referred to as isotopes. Hence, the mass number varies.

Example: The most simple example is the Carbon molecule which exists as 6 C 12 and 6 C 14

(iv) Isobars: Isobars are atoms which have the same mass number but differ in atomic number.

Examples are,   20 Ca 40 and   18 Ar 40

Uses of isotopes

• The isotope of the Iodine atom is used to treat goitre, an iodine-deficient disease.
• In the treatment of cancer, an isotope of cobalt is used.
• Fuel for nuclear reactors is derived from the isotopes of the Uranium atom.

11. Na+ has completely filled K and L shells. Explain.

The atomic number of sodium is 11. It has 11 electrons in its orbitals, wherein the number of protons is equal to the number of electrons. Hence, its electronic configuration is K-2 ; L-8 ; M-1 ; The one electron in the M shell is lost, and it obtains a positive charge since it has one more proton than electrons and obtains a positive charge, Na+ . The new electronic configuration is K-1; L-8, which is the filled state. Hence, it is very difficult to eliminate the electron from a filled state as it is very stable.

12. If the bromine atom is available in the form of, say, two isotopes   35 Br 79 (49.7%) and 35 Br 81 (50.3%), calculate the average atomic mass of the Bromine atom.

The atomic mass of an element is the mass of one atom of that element. Average atomic mass takes into account the isotopic abundance.

Isotope of bromine with atomic mass 79 u = 49.7%

Therefore, Contribution of  35 Br 79  to atomic mass = (79 × 49.7)/100

Isotope of bromine with atomic mass 81 u = 50.3%

Contribution of  35 Br 81  to the atomic mass of bromine = (81 × 50.3)/100

Hence, the average atomic mass of the bromine atom = 39.26 + 40.64 u = 79.9u

13. The average atomic mass of a sample of element X is 16.2 u. What are the percentages of isotopes   8 X 16 and 8 X 18 in the sample?

Let the percentage of 8 X 16 be ‘a’ and that of 8 X 18  be ‘100-a’.

As per the given data,

16.2u = 16 a / 100 + 18 (100-a) /100

1620 = 16a + 1800 – 18a

1620 = 1800 – 2a

Hence, the percentage of the isotope in the sample 8 X 16  is 90% and that of

8 X 18 = 100-a = 100- 90=10%

14. If Z=3, what would be the valency of the element? Also, name the element.

Given: Atomic number, Z = 3

The electronic configuration of the element = K-2; L-1, hence its valency = 1

The element with atomic number 3 is Lithium.

15. Composition of the nuclei of two atomic species, X and Y, are given as under

                          X Y

Protons = 6 6

Neutrons = 6 8

Give the mass numbers of X and Y. What is the relation between the two species?

Mass number of X: Protons + neutrons = 6+6 = 12

Mass number of Y: Protons + neutrons = 6+8 = 14

They are the same element, and their atomic numbers are the same.

They are isotopes, as they differ in the number of neutrons and hence their mass numbers.

16. For the following statements, write T for true and F for false.

(a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons.

(b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.

(c) The mass of an electron is about 1/2000 times that of a proton.

(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.

(a) The statement is False.

(b)  The statement is False.

(c)  The statement is True.

(d)  The statement is False.

17. Put a tick(✓) against the correct choice and cross(x) against the wrong choice in questions 15, 16 and 17.

Rutherford’s alpha–particle scattering experiment was responsible for the discovery of

(a) Atomic nucleus

(b) Electron

(d) Neutron

Isotopes of an element have

(a) The same physical properties

(b) Different chemical properties

(c) Different number of neutrons

(d) Different atomic numbers

18. Number of valence electrons in Cl – ion are

The electronic distribution of Cl is K-2, L-8, M-7. Valence electrons are 7; hence, chlorine gains one electron for the formation of Cl – . Therefore, its valency is 8.

19. Which one of the following is a correct electronic configuration of Sodium?

(b) 8, 2, 1

(c) 2, 1, 8

(d) 2, 8, 1

Complete the following table.

The following table depicts the missing data:

Atomic number(Z) = Number of protons

Mass number = Number of neutrons + atomic number

Mass number(A) = Number of neutrons + number of neutrons

Chapter 4 Structure of the atom of  NCERT Class 9 Science is categorised under Unit I – Matter – Its Nature and Behaviour, which fundamentally deals with the physical nature of matter and what constitutes the particles that make up matter. The whole unit of Matter makes up 23 marks, out of which the Structure of the Atom chapter is allocated 10 marks. In order to score maximum marks, students should practise using the Science NCERT Solutions for Class 9 .

This chapter has a good weightage. Thorough knowledge of all the concepts covered in this chapter will help them achieve up to 10 marks from this chapter alone. Around 2 questions with 5 marks each appear in the CBSE examination from this chapter and are expected to appear in the following year too.

List of subtopics covered in Class 9 Science Chapter 4 Structure of the Atom

Students can best utilise the NCERT Solutions for Class 9 Science Chapter 4 to make any quick references to comprehend the above and other complex topics with ease. Further, these solutions can be viewed both online and offline as a downloadable PDF.

List of Exercises in Class 9 Science Chapter 4

Number 4.1 – Charged particles in matter 2 Questions ( 2 short)

Number 4.2 – The structure of an atom 4 Questions ( 4 short)

Number 4.2.4 – Neutrons 2 Questions ( 2 short)

Number 4.3 – How are electrons distributed

indifferent orbits(shells)? 2 Questions ( 1 long, 1 short)

Number 4.4 – Valency 1 Question ( 1 long)

Number 4.5 – Atomic number and mass number 2 Questions ( 2 long)

Number 4.6 – Isotopes 2 Questions ( 1 long, 1 short)

Exercise Solutions – 19 Questions ( 6 long, 9 short, 4 MCQs)

In this chapter, students get to know about the discovery of electrons and protons that is credited to J.J. Thomson and E.Goldstein, respectively. As per the theory by J.J. Thomson, electrons are implanted in the positive sphere. The discovery of the atomic nucleus was forwarded by Rutherford’s alpha-particle scattering experiment. Students also learn about how Neil Bohr’s model was successful, as he explained how electrons are distributed in different orbits around the nucleus.

This chapter also briefs about the discovery of neutrons in an atom proposed by J. Chadwick, hence the conclusion about the existence of three sub-atomic particles, i.e., protons, neutrons, and electrons. It also sheds light upon concepts such as valency, atomic number and mass number, which are essential to identify elements and their behavioural properties. Learn more about these concepts by accessing the NCERT Solutions for Class 9 of this chapter of Science.

Overall, it helps us answer the basic concepts of what sets an atom apart from atoms of other elements, the indivisibility concept of atoms, the representation of elements through mass number and atomic mass, as well as the basic constituents of an atom.

Key Features of NCERT Solutions for Class 9 Science Chapter 4 – Structure of the Atom

• NCERT Solutions enable students to prepare for CBSE Class 9 examination stress-free.
• Calculations and electronic configurations have been explained in detail while solving.
• Diagrams have been used wherever necessary to be able to learn visually.
• Numericals involving finding the valency of elements have been worked out in detail.
• Comparison questions involve the use of tables to help learn and understand better.
• Pointers have been used in the solutions to remember at a glance.

Frequently Asked Questions on NCERT Solutions for Class 9 Science Chapter 4

List the topics and subtopics covered in chapter 4 of ncert solutions for class 9 science., how many exercises are present in chapter 4 of ncert solutions for class 9 science, where can i find the ncert solutions for class 9 science chapter 4 online, leave a comment cancel reply.

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Student posters on chemistry topics

By Michael Seery 2014-03-03T11:59:00+00:00

This post discusses the use of student generated posters and includes a video guide for students on how to prepare posters

One of the nice ways of getting students to think about chemistry, especially at introductory levels, is to have them present on something topical that can be related to their core chemistry. This can be useful for chemistry programmes with specific contexts-for example medicinal chemistry, forensic chemistry, etc. Several institutions use the idea of chemistry posters , whereby students prepare a poster on a chemistry topic and present it to their peers and staff either in person or virtually. 

In my experience of doing this, I have found that students either do well in the graphical element of poster preparation or in the inclusion of relevant and appropriate chemistry. To have both in the same poster is less common. In my institution, students are given an initial source of information, and they use this to begin to build up their poster, referring to further sources as required. I feel that this approach helps students, especially at the introductory level, to get a good start on building up the chemistry information on the poster from a reputable source.

To help with this, I prepared a video for my students on how to prepare chemistry posters. These posters differ of course from traditional research posters. They are smaller in size (we use A1), and focus on including relevant aspects of chemistry to explain a topic. But there are lessons that can be learned from this exercise that will be useful to students if they need to prepare research posters in the future. These include thinking of the core message of the presentation, considering a visual rather than text-based medium, and considering the audience of the poster. 

A video describing how to prepare a student poster in chemistry, detailing how to set up MS PowerPoint and how to plan your poster content. An accompanying guide is available at: http://michaelseery.com/downloads/PosterPrep.pdf

One of the hard jobs for us as educators is to think of poster topics. They need to be topical enough to engage students and have an appropriate theme so that they can relate to their chemistry currently being studied. I find that articles in Education in Chemistry and Chemistry World are great for this. They have some good chemistry at their core, but are of interest and relevance (to have appeared in the magazine in the first place).  I've listed out some of the ones I have compiled below. If you have any more ideas for sourcing titles, please do share in the comments section! For the more recent Education in Chemistry articles, you'll see links to the article online - many thanks to David Sait from EiC for providing these links!

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Free powerpoint presentations on Chemistry.

These powerpoint presentations have been made by teachers and experts for different topics of Biology. Please feel free to download and use.

Using PowerPoint for teaching chemistry can be a valuable tool to present complex concepts, visualize molecular structures, and engage your students. Here are some tips on how to use PowerPoint effectively for teaching chemistry:

Organize your content: Start by organizing your content into logical sections or topics. Determine the key concepts and subtopics you want to cover in your presentation. This will help you create a structured and organized PowerPoint.

Utilize visuals: Chemistry often involves molecular structures, reactions, and chemical equations. Incorporate relevant visuals such as diagrams, molecular models, animations, or videos to make the concepts more understandable and engaging for students. Use software or online tools to create accurate representations of molecules.

Simplify complex ideas: Break down complex chemical concepts into simpler, more manageable parts. Use step-by-step explanations, visual aids, and analogies to help students grasp the core principles and understand the connections between different concepts. Relate abstract concepts to real-life examples whenever possible.

Highlight key terms and definitions: Chemistry has its own terminology and symbols. Define and highlight key terms, symbols, and equations in your presentation to ensure that students understand the vocabulary used in the field. You can use bullet points or text boxes to emphasize important terms.

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Other tips for using powerpoint for chemistry.

Use animations and transitions: PowerPoint offers animation and transition features that can be used to demonstrate chemical processes, such as reactions or molecular interactions. Use animations to show the movement of electrons, the formation of bonds, or the progress of a reaction.

Incorporate interactive elements: Include interactive elements such as quizzes, puzzles, or discussion questions within your presentation. This encourages active engagement and allows students to apply their knowledge or think critically about the material. You can also use clicker questions to gauge student understanding.

Provide clear explanations: Use clear and concise explanations to convey information. Break down complex chemical processes or concepts into simpler components and explain each step or component separately. Use bullet points, charts, or diagrams to support your explanations.

Include practice questions or activities: Dedicate slides to practice questions, problem-solving examples, or laboratory activities that allow students to apply their understanding of the concepts. This helps reinforce their learning and encourages active participation.

Use multimedia resources: Consider incorporating videos, simulations, or online resources that demonstrate chemical processes or provide interactive learning experiences. These resources can supplement your teaching and provide students with additional visual or hands-on learning opportunities.

Review and summarize: End your presentation with a summary slide that recaps the main points covered. Reinforce key concepts and encourage students to review the material on their own. Consider providing additional resources or references for further exploration.

Remember to adapt your presentation style to suit the needs of your students and adjust the pace of your presentation accordingly. Be prepared to answer questions and provide further clarification as needed. Encourage student participation and discussion to foster an interactive learning environment.

25 Useful Presentation Topics for Science

By: Author Shrot Katewa

We are mostly asked questions about Presentation Design. But, sometimes, we do have our patrons reaching out to us to seek help with the “content” that needs to be created even before we begin with the design of the presentation.

So, today we are sharing a few really easy-to-cover super useful presentation topics for Science. This is especially helpful for all those teachers and parents who are looking to increase the curiosity of aspiring students and children.

So, let’s dive right into it –

A Quick Note Before We Begin – if you want to make jaw-dropping presentations, I would recommend using one of these Presentation Designs . The best part is – it is only $16.5 a month, but you get to download and use as many presentation designs as you like! I personally use it from time-to-time, and it makes my task of making beautiful presentations really quick and easy!

1. Big Bang Theory – Origin of Our Universe

As a kid, I was always curious about how we came into existence! How the planet Earth was created? How did it all start? This is a great topic to really generate and at times, even quench the curiosity of your students or children. While it is a great topic for presentation in class, it is also an equally good topic for a dinner conversation with your kids.

2. DNA structure

Our DNA is the very core of our life. If the Big Bang Theory is how the universe came into being, DNA is where our personal journey begins. While the structure of DNA is quite fascinating, the impact it has on our lives and how it affects our characteristics is mind-boggling!

It is another great topic for a Science Presentation. Do keep in mind, use of visual aids will most likely improve comprehension and retention among your audience.

3. Gene Editing & Its Uses

In case you choose to go with the previous topic of DNA, Gene Editing serves as a perfect extension of that topic even though it can be a great topic in itself. Sharing insights on Gene Editing and how it works, can showcase the capacity of human endeavors and its resolve to make things better.

4. Important Discoveries of Science

Okay, so this can really be a fun topic. As a kid, it was always fascinating to know about some of the world’s greatest discoveries and inventions.

Be it Penicillium or the first flight by the Wright Brothers, such topics allow you to take your audience on a journey and relive the times in which these discoveries and inventions were made. The thing that I like the most about this topic is that it doesn’t have to be completed in one session.

In fact, this can be turned into a knowledge series of multiple sessions as the list of discoveries is endless.

5. Aerodynamics

Most kids and students are really fascinated with planes. But, only a few really understand the basic principles of how a plane works. Explaining Aerodynamics can be an interesting topic.

It also allows you to introduce props such as a plane and practical exercises such as creating your own plane and analyzing its aerodynamics. The introduction of visuals for such a topic can greatly enhance the learning experience.

So this is a topic that most of the kids and students would have at least heard of, most might know about it a little. But very few would really understand how gravity truly changed our concepts not just on Earth, but also beyond our Planet in our Solar System.

Gravity alone is responsible for the tectonic shift of mindset that the Earth was the center of our Solar System to the fact that the Sun is the center of our Solar System around which the rest of the planets revolve. That and much more!

Explaining the stories of Galileo who first challenged this assumption and how Newton turned everything we knew upside down (almost literally!)

7. Photosynthesis

Another interesting Science topic for a presentation.

How do non-moving organisms produce and consume food? How Photosynthesis is not just limited to trees but virtually drives all lifeforms on Earth through the transfer of energy.

Also, touching upon the fact how Photosynthesis has led to the revolutionary discovery of Solar cells and how it is potentially going to be powering our future.

8. Artificial Intelligence – Boon or Bane

When it comes to Artificial Intelligence, there is a lot that we can do to engage the curiosity of our kids and students. It is an evolving part of Science as we haven’t fully applied and utilized AI.

One of the reasons this can be a great topic is because it engages your students or kids to really think. You may consider forming 2 teams and allowing an open debate on how AI could be a boon or a bane – a great way to promote cross-learning.

9. Ocean – The Unknown World

Our Ocean is what sets our planet Earth apart from the other planets in our solar planet. It is not only one of the main factors contributing to life on earth, the Ocean holds a world of its own with hidden creatures which have only recently been explored.

There is a lot to cover when it comes to the Ocean. Don’t limit your imagination to just lifeforms as you can even talk about treasures troves contained in the ships that sank!

10. Astronomy

So I have a confession to make. Which is this – Astronomy astonished me as a kid, and it amazes me even now! There have been countless nights that I gazed at the stars in the sky in amazement trying to locate a planet, and falling stars and other man-made satellites in the sky.

This is not just an amazing topic for a presentation, but if you could get hold of a telescope for a practical session, it will make a night to remember for the kids and the students!

11. Light and its effects

This is another topic that can turn into a great practical session!

Presentations can be accompanied by a trip to the physics lab or even using equipment like a prism to take the session experience of your audience to a totally different level! Experiencing the various colors that form light is one thing, but understanding how it impacts almost every single thing in our day-to-day activities makes us admire it.

12. Atoms – Building Blocks of Matter

While there is a whole universe outside of our Planet, there is a completely different world that exists when we go granular inside any matter.

There are literally billions and billions of atoms inside just our human body. Each atom has its own world making it as diverse as you can imagine.

How these atoms interact with each other and what makes an atom can be a really engaging topic to bubble the curiosity of the students or your kids!

13. Sound & Waves

Another super interesting presentation topic for Science for kids and students is to understand how Sound works.

There are several things to cover as part of this ranging from simple waves to frequency and resonance experiments. Sound is not just a good topic for a presentation but also for experiments and physical demos.

14. Technology

Technology as a topic has a lot to cover. As we all know that technology touches each of our lives on a daily basis, students can find this topic relatable quite easily. The canvas for exploration and presentation is quite broad giving you a wide range of technology topics to present from.

15. Human Brain

Many believe that we only use 10% of the capacity of our human brain. We have to date only barely managed to understand how our brain works.

Even the parts that we have gathered an understanding about, we don’t quite fully understand. The human brain has remained a topic of astonishment for scientists for a long time. It is only logical to conclude that if presented effectively, this can be a good presentation topic on science.

16. Evolution

When Charles Darwin presented his Theory of Evolution by Natural Selection in his book “The Origin of Species”, it took the world of science by storm.

How the species have evolved over a period of millions of years is quite interesting. There were quite a few interesting learnings that Darwin had and he shared that as a summary. This is something that has been also covered in the TV series Cosmos by Neil Degrasse Tyson.

I highly recommend giving this TV series a watch to get inspiration for some topics for presentation.

17. Magnetism

The majority of the kids have handled and spent hours in awe playing with a magnet. Many try to understand how a magnet really works! But, only a few are able to really understand the science behind it.

Magnetism can be a really fun topic to give a presentation on. Additionally, this topic also allows enough space to display, experiment, and have fun with real magnet and iron filings to showcase the effect of magnetism.

18. Electricity

Electricity is pretty much everywhere.

Today, if there is no electricity, the region is considered underdeveloped or backward. The discovery and the use of electricity is probably one of the greatest inventions of the 20th century.

It has been single-handedly responsible for industrialization, powering growth, and the development of the human race.

19. Steam Engine

Steam Engine was the first step of the human race towards powered locomotives.

From the discovery of the steam engine to how it was responsible for creating a time standard and time zones along with the stories related to it, can all be very fascinating and take you back in time to relive history!

A perfect presentation topic for science students.

20. Science of Medicine

No list of presentation topics for Science would be complete without mentioning medicine and its benefits.

The discovery of medicines and drugs has been responsible for nearly doubling the average human age. The impact is far-reaching with several pros and cons that constitute an interesting topic for presentation.

21. Periodic Table

Students often find this topic very dull. However, if you can help them understand the beauty and significance of this periodic table, it can be an amazing topic.

To really understand how Mendeleev could predict the existence of various elements even before they were discovered, is mind-boggling!

The periodic table is such a perfect table that explains how the elements are arranged in a well-structured manner in nature. This topic can be turned into a very interesting topic but a bit of effort and some out-of-the-box thinking may be required.

22. Buoyancy

Okay, so we all may have heard the story of Archimedes in a bathtub and how he shouted “Eureka” when he managed to solve the problem that was tasked to him. He did this using the Buoyancy principle.

While this story is something we relate to buoyancy the most, there is a lot more than we can truly learn and apply using this principle. This can be a very helpful topic for a presentation as well as a practical science experiment.

23. Health & Nutrition

Health & Nutrition is a very important aspect of our life. Its importance is often not completely understood by kids and students alike. Presenting about Health & Nutrition can go a long way to benefit the students to maintain a very healthy life!

24. Our Solar System

Our Solar System is a topic that is mostly taught since you join the school.

However, while most of us know about our solar system, there are enough mysteries about it to capture and captivate the attention of your audience. Questions like – why is Pluto not a planet anymore?

Or other questions such as – are we alone in this universe or even topics around the Sun as a star or even the asteroid belt between Mars and Jupiter can all lead to great engaging presentations and discussions.

25. Stem Cell

Stem cell research has become cutting-edge medical research. Thus, it is often a hot topic for discussion but is often not completely understood.

This topic will also provide you an opportunity to engage your audience in a debate that could be centered around the ethics of stem cells and their application.

This is a perfect topic as this allows your students or kids to learn and share their opinion with others.

Science is a vast world. Even though there are several other topics that can be covered, we decided to list topics that are relatively common such that it widely applies to a large set of people. If you have shortlisted your presentation topic and are looking for help to create a visually appealing presentation that captures the attention of your audience, be sure to reach out to us!

Our goal on this blog is to create content that helps YOU create fantastic presentations; especially if you have never been a designer. We’ve started our blog with non-designers in mind, and we have got some amazing content on our site to help YOU design better.

If you have any topics in mind that you would want us to write about, be sure to drop us a comment below. In case you need us to work with you and improve the design of your presentation, write to us on [email protected] . Our team will be happy to help you with your requirements.

Lastly, your contribution can make this world a better place for presentations . All you have to do is simply share this blog in your network and help other fellow non-designers with their designs!

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Animated Chemistry Lesson

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