Question

explain why a substance expands on heating?​

Answer 1

Answer:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Explanation:

Hope it will help you

Jai Hind

Answer 2

$\large\bf\underline\red{AnswEr}$

》When heat is added to a substance, the molecules and atoms vibrate faster.

》As atoms vibrate faster, the space between atoms increases.

》The motion and spacing of the particles determines the state of matter of the substance.

》The end result of increased molecular motion is that the object expands and takes up more space.