What happens to partials of a solid as thermal energy is added and the solid undergoes a phase change?

Question

Define the Law of Conservation of Energy.

If someone can help me with these questions, that would be great!

Answer 1

once is enough, thank you.
Those who can help probably only want do do it once for each question.

Answer 2

1. Read up on the Kinetic Molecular Theory.
2. Look on Google. Definitions galore.

Answer 3

My apologies! I didn't mean to post it twice. I'm not really used to jiskha on my phone, haha!

Thanks for the help though!