Question

1.2 Why do solids have a definite volume?
naphthalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl
Intext Questions
1.1 Why are solids rigid?
chloride, fibre glass, copper.
1.4 Why is glass considered a super cooled liquid?​

Answer 1

Answer:

solids have a definite volume, as they are rigid in shape and cant change their vol. and even shape.

Explanation:

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Answer 2

1.1 $\sf\pink{ Answer }$ :- In solids , the constituent particles are not free to move due to strong force of attractions. Hence they are rigid.

1.2 $\sf\green{ Answer }$ The constituent particles in solids are bound to their mean positions by strong forces of attractions.

→ The inter-particle distances remain unchanged at a given temperature and thus solids have a difinite volume.

1.4 $\sf\red{ Answer }$ :- Glass is an amorphous solid.

→ Like liquids , it has a tendency of flow , though very slowly.

→ This is evident from the fact that the glass panes in the windows of old buildings are invariably found to be slightly thicker at the bottom than at the top.

→ This is because the glass flows down very slowly and makes the bottom portion slightly thicker.