MEDIUM
7th ICSE
IMPORTANT
Earn 100

Give a reason why liquids have a definite volume but no definite shape. 

Important Questions on Matter & Its Composition

MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 1 - Matter & Its Composition>EXERCISE>Q 8
Give reasons why gases have no definite volume and no definite shape.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 1 - Matter & Its Composition>EXERCISE>Q 9
Particles of matter possess energy due to their random motion. Compare the particles in solid, liquid and in a gas with reference to the amount of kinetic energy possessed by each.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 1 - Matter & Its Composition>EXERCISE>Q 10
Describe simple experiments to show that particles of matter have an intermolecular attraction.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 1 - Matter & Its Composition>EXERCISE>Q 10

Describe simple experiments to show that particles of matter are closely packed in solids and less in liquids. 

MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 1 - Matter & Its Composition>EXERCISE>Q 11
A crystal of iodine is placed in a closed flat bottom flask and heated. State how you would conclude from the observations seen, that inter particle space is minimum in solids & maximum in gases.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 1 - Matter & Its Composition>EXERCISE>Q 12

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
Simplified Chemistry>Chapter 1 - Matter & Its Composition>EXERCISE>Q 13
Give a reason why solids, liquids co-exist at their melting points.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 1 - Matter & Its Composition>OBJECTIVE TYPE QUESTIONS>Q 1

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