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  • Subjects
  • Chemistry CBSE Live product
  • Class 9 (2026-27)
  • Journey Inside the Atom

Atomic Models & Subatomic Particles

Theory

1. Atomic Models & Subatomic Particles

Practice Questions

1. Observation of Rutherford's experiment

Difficulty: medium

2
2. Conclusion of Rutherford's gold foil experiment

Difficulty: hard

2
3. Drawbacks of Rutherford

Difficulty: easy

2
4. Postulates of Bohr’s model of an atom

Difficulty: medium

3
5. Bohr's atomic model

Difficulty: easy

2
6. Energy shells and atomic models

Difficulty: easy

1
7. Discovery of structure of the atom

Difficulty: easy

2
8. Comparison of subatomic particles

Difficulty: hard

3
9. Subatomic particles and atomic mass

Difficulty: medium

2

Teacher manual

1. Methodical recommendation
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