Question

Define the following terms:
(a) Fusion
(b) Vaporisation
(e) Condensation (d) Sublimation
(e) Diffusion
Melting point
(g) Boiling point (h) Liquefaction​

Answer 1

Answer:

1. The conversion of solid to liquid state is known as fusion. For eg. melting of ice

2. The conversion of liquid to gaseous state is known as vaporization . For eg. drying of clothes.

3. The conversion of gas to liquid state is known as condensation. For eg. steam into water

4. The conversion of solid to gaseous state without passing through the intermediate liquid state is known as sublimation.

5. The spontaneous movement of particles of gaseous and liquid state is known as diffusion. for eg. smell of cooked food.

6. The melting point of a substance is the point at which a solid starts changing into liquid state. The melting point of ice is 0°C. For eg. melting of ice into water.

7. The boiling point of a substance is the point at which a liquid starts changing into gaseous state. The boiling point of ice is 100°C. For eg. changing of water into steam.

8. It is the process when we change gas into liquid by Increasing the pressure and decreasing the kinetic energy of that substance. For eg. changing of gas into water.

Answer 2

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