MEDIUM
7th ICSE
IMPORTANT
Earn 100
Give reasons why gases have no definite volume and no definite shape.
Important Questions on Matter & Its Composition
MEDIUM
7th ICSE
IMPORTANT
MEDIUM
7th ICSE
IMPORTANT
MEDIUM
7th ICSE
IMPORTANT
Describe simple experiments to show that particles of matter are closely packed in solids and less in liquids.
MEDIUM
7th ICSE
IMPORTANT
MEDIUM
7th ICSE
IMPORTANT
Explain the term interconversion of matter with ice as a starting material.
State the term which refers to the conversion of a substance on heating from:
a] solid state to a liquid state.
b] liquid state to vapour state.
c] vapour state to liquid state.
d] liquid state to solid state.
MEDIUM
7th ICSE
IMPORTANT
MEDIUM
7th ICSE
IMPORTANT
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Have no definite shape, volume or free surface | a. Solids only |
| 2. Are highly compressible and least rigid | b. Liquids only |
| 3. Have a definite volume, no definite shape are slightly diffusible | c. Gases only |
| 4. Are not compressible have no diffusibility | d. Liquids and gases only |
| 5. Have mass occupy space | e. Solids and gases only |
| f. Solids, liquids and gases |
EASY
7th ICSE
IMPORTANT
Give reason for the following.
Solids have no definite shape or volume.
NOTE: This question given in the book seems to have an error and the modified question should be given as below.
Gases have no definite shape or volume.
