Question

2.
Define the following terms :
i) Sublimation
ii) Kinetic energy
iii) Mass
iv) Density
v) Diffusion
vi) Latent heat of fusion
vii) Humidity
viii) Boiling
ix) Latent heat of vaporisation​

Answer 1

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HERE IS YOUR ANSWER

1. Sublimation > The change of solid material into gas without converting into liquid state.

In other words

Conversion of solid material directly into gas.

2. Kinetic energy >kinetic energy of an object is the energy that it possesses due to its motion.

3. Mass>mass is a measure of the amount of matter in an object.

4. Density >density is defined as the ratio between mass and volume.

5. Diffusion >the intermixing of two different particles on their own.

6. Latent heat of fusion> the amount of heat energy that is required in change 1kg of solid into liquid at atmospheric pressure and its melting point is known as the latent heat of fusion.

7. Humidity >humidity is the amount of water present in the air.

8. Boiling >boiling is a rapid vaporization of a liquid it occurs when liquid heated up to its boiling point.

9. Latent heat of vaporization >the amount of heat which is required to convert 1kg of the solid (at its boiling point) to vapour of gas without any change in temperature.

⏺️Latent heat of vaporization of water =22.5 x 10^5 J/kg

May this helps you ✌️

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Answer 2

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