CH 1 MATTER IN OUR SURROUNDING
Assignment 2
Answer the following questions:
1. A substance has a definite volume but no definite shape? State whether this substance is a solid, a liquid or a gas.
2. Arrange the following substances in increasing order of force of attraction between the particles. (a) Milk (b) Salt (c) Oxygen.
3. Why do gases exert more pressure on the walls of the container than solids?
4. Stone is solid. Give two characteristics of solid to prove this statement.
5. Why can a person move his hands through air and water but not through a table top?
6. Write 4 differences in the characteristics of solid, liquid and gas.
7. Why are gases compressible and not liquids or solid?
8. Can a rubber band be considered as solid as it can be stretched? Give reasons.
9. A gas completely fills a container in which it is kept. Give reasons as to why can a gas do so?
10. Write one question you would like to put forth for other classmates to answer in the next task.
Answers
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Answer:
1...liquid
2...milk,salt,oxygen
3...because it has large amount of intermolecular space
4...For example..wall,table etc
5...because table top cannot flow but water and air can flow
7...because gases have more intermolecular space than liquid and solid
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