Question

D. LONG-ANSWER QUESTIONS: Answer thes
1. Explain why a substance expands
heating
on​

Answer 1

Answer:

on heating the intermolecular force of attraction becomes weak i.e. decreases and the intermolecular space increases . hence resulting in the expansion of the substance.

Answer 2

Explanation:

reason to expand of a substance on heating it:-

while we heat the substance the molecules present in that substance becomes very week as their intermolecular force also decreased so the substance results in expands

example :- candle , gold , metal , etc......