Question

(a). Define the term melting point of a substance (b) for any substance why does the temperature remain constant during the change of state (c). Describe an activity to determine the melting point of ice with diagram

Answer 1

Ans a) The Temperature at which a substance starts melting is called melting point.

b) During Change in state, temp. is constant because all the energy is utilized in changing the state.

Answer 2

the temperature at which a substance began melting is called Mel.....

during the change of state the temperature is used up in breaking the force of attraction between the molecules that's why temp... remain .same