Question

Select the correct answer.

Why does a solid change to liquid when heat is added?
OA
The spacing between particles decreases.
O B.
Particles lose energy.
OC.
The spacing between particles increases.
OD. The temperature decreases.

Answer 1

the answer is A- the spacing between particles decreases. Because as you put heat on a solid such a ice the density of tht solid decreases and turn into a liquid (water)

when density of a solid decreases, the spacing between the particles decreases

In a way just think that the particles loosen up to the point where it no longer holds together as a solid.

Answer 2

c.

Particles will also move faster.