Class Response
A. Oral Questions:
1. Why is air a matter?
2. Which form of matter has a definite shape?
3. Why do solids expand on heating?
Answers
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Answer:
- air has mass because it is made up of gases and atoms of gases like oxygen, nitrogen, helium mass and it occupies space because it forms the atmospheric envelope.
- Solid
- Because when solid is heated its atom vibrate faster and its volume is increased and hence it expands.
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