Is this Class 9 Science worksheet on Structure of the Atom free?

Yes — it is completely free, with no login and no ads. You can print it or save it as a PDF, and generate unlimited variations.

Does the Structure of the Atom worksheet come with answers?

Yes. Every worksheet has a separate answer key with the correct answers, short explanations and marks, so it is ready for marking.

Can I choose how many questions and which types?

Yes. Open the generator for this chapter and set how many MCQs, short, long and HOTS questions you want; totals and marks update live, and you can swap any single question.

Which board and class is this for?

This worksheet is aligned to CBSE Class 9 Science, chapter “Structure of the Atom”.

🧾 CBSE · Class 9

Class 9 Science: Structure of the Atom Worksheet (with Answers)

A free, print-ready worksheet on Structure of the Atom for CBSE Class 9 Science, with a matching answer key. Use the sample below, or build your own with the exact mix of questions you need — no login, no ads.

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Sample worksheet

7 of 19 questions from this chapter. Generate your own for the full set, more variations, and a clean print layout.

1. Which particle carries a negative charge?
- (a) proton
- (b) nucleus
- (c) electron
- (d) neutron
2. Protons and neutrons are found in the:
- (a) orbitals only
- (b) nucleus
- (c) shells
- (d) space outside
3. The atomic number of an element equals its number of:
- (a) protons
- (b) neutrons
- (c) electrons + neutrons
- (d) nucleons
4. Atoms with the same atomic number but different mass numbers are:
- (a) ions
- (b) isobars
- (c) isomers
- (d) isotopes
5. Which sub-atomic particle has no charge?
6. Write the electronic configuration of oxygen (Z = 8).
7. Describe Rutherford's alpha-particle scattering experiment and its conclusions.

View answers

1. (c) electron — The electron is negatively charged.
2. (b) nucleus — They are in the central nucleus.
3. (a) protons — Atomic number = number of protons.
4. (d) isotopes — Same Z, different A ⇒ isotopes.
5. The neutron.
6. 2, 6.
7. Rutherford bombarded a thin gold foil with alpha particles. Most passed straight through, some deflected, and very few bounced back. This showed that most of the atom is empty space, that the positive charge and nearly all the mass are concentrated in a tiny central nucleus, and that electrons revolve around it.

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How it works

Every question is drawn from StudyMatic’s own Science bank for Structure of the Atom — nothing is auto-generated or invented. Pick how many of each type you want, add your own questions if you like, choose 1–4 paper sets for anti-cheating, and print the worksheet and answer key separately or save them as PDF.

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FAQ

Is this Class 9 Science worksheet on Structure of the Atom free?: Yes — it is completely free, with no login and no ads. You can print it or save it as a PDF, and generate unlimited variations.
Does the Structure of the Atom worksheet come with answers?: Yes. Every worksheet has a separate answer key with the correct answers, short explanations and marks, so it is ready for marking.
Can I choose how many questions and which types?: Yes. Open the generator for this chapter and set how many MCQs, short, long and HOTS questions you want; totals and marks update live, and you can swap any single question.
Which board and class is this for?: This worksheet is aligned to CBSE Class 9 Science, chapter “Structure of the Atom”.