Matter in our surroundings (IX Std)

Important and conceptual Questions

1.Define matter.

2.What are the properties of matter?

3. What are the characteristic properties of particles of matter?

4.What is melting point

5.What is boiling point

6.How can you convert a gas into liquid?

ANSWERS–

1.A Matter is anything which a) possesses mass b) occupies spaces and c) can be felt by our sense organ.

2.a) Matter is made up of particles. b) Particles of matter are extremely small beyond our imagination.

3.a) Particles of matter have space among them.
b) Particles of matter have attraction among them.
c) Particles of matter are continuously moving

4.The temperature at which solid changes into liquid is called melting point.

5.The temperature at which liquid changes into gas is called melting point.

6.By cooling and pressuring a gas can be converted into liquid.