Question

1. State the three effects of heat on matter.
2. (a) Define interconversion of states of matter
(b) What are the two conditions for the
interconversion of states of matter?
3. Define the following terms :
(a) Fusion
(b) Vaporisation
(c) Condensation (d) Sublimation
(e) Diffusion 6 Melting point
(8) Boiling point (h) Liquefaction
4. Differentiate between:
(a) Solidification and condensation
(b) Melting and boiling​

Answer 1

Answer:

1

Ans : I) The matter expands

II) If the heat is enough then the matter will

change it's state

III) The temperature of the matter changes

3

b) ans : The process of change of liquid state of matter

into it's gaseous state on heating.

c) ans : The process of change of gaseous state of

into it's liquid state on cooling.

d) ans : The change of solid state of matter directly into

it's gaseous state without changing into it's

intermediate liquid state.

e) ans : The spontaneous mixing of two particles of a

substance without forming a layer.

f) ans : The constant temperature at which a solid starts

to change into it's liquid state on heating.

g) ans : The constant temperature at which a liquid starts

to change into it's gaseous state on heating.