Class 9 Science: Atoms and Molecules Worksheet
This worksheet will help you practice fundamental concepts related to atoms, molecules, and chemical formulas as covered in Class 9 Science.
Class 9CBSEScienceeasyPractice
Preview · 10 questions
- Q1. Which of the following laws states that mass can neither be created nor destroyed in a chemical reaction?
- Law of Constant Proportions
- Law of Conservation of Mass
- Law of Multiple Proportions
- Law of Reciprocal Proportions
- Q2. The word 'atom' was coined by:
- Antoine Lavoisier
- Joseph Proust
- John Dalton
- Democritus
- Q3. The chemical symbol for Sodium is:
- So
- Na
- Sd
- Sod
- Q4. What is the atomicity of Oxygen (O2) molecule?
- 1
- 2
- 3
- 4
- Q5. Which of the following is a diatomic molecule?
- He
- Ne
- N2
- Ar
+ 5 more in the printable PDF.