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.