Question

2. what is the boiling point of the substance?
3. What is the melting point of the substance?
4. what letter represents the range where the solid is being warmed?
5. what letter represents the range whre the liquid is being warmed?
6. what letter represents the range where the vapor is being warmed?
9. what letters(s) shows a change in potential energy?
10. what letter(s) shows a change in kinetic energy?
and 12. what letter represents crystallization?
ive attached the file so you can see the freezing and boiling point graph.

Answer 1

You have the 3 phases of matter to distribute across this graph (solid, liquid and gas/vapour) and the transitions between these 3 stages. On heating you come first to melting (solid to liquid) and then boiling (liquid to gas). On cooling the transitions are condensation (gas to liquid) followed by freezing/crystalisation (liquid to solid). The letters you've put in look right to me so you should have no trouble filling in the bits in between. As temperature is simply a measure of the kinetic energy of articles then any increase in temperature corresponds to an increase in kinetic energy.