What happens to the temperature when a substance is melting?

Answer 1

For most substances, it's the same temperature. For example, ice melts at 0°C (273K), and water freezes also at 0°C.

A few substances, such as agar, have a hysteresis. For example, agar melts at 85°C; to solidify it again, you have to cool it down to about 32-40°C.

Answer 2

Yes, the temperature of a substance will vary while it is melting or freezing. Water will get cold when it freezes. Items that are melting heat up.

Answer 3

Yes. A substance melts and freezes at the same temperature. Melting is as it changes from solid to liquid, freezing is from liquid to solid.

Answer 4

Temperature of a substance does not change when it in the process of freezing. Temperature will continue to decrease once the substance is completely frozen (solid).

Answer 5

When a substance is melting the temperature gets higher. This is because the molecules are beginning to spread out more and more.

Answer 6

The more the substance, the longer and higher temperature it will take to melt/boil/freeze/condense.

Answer 7

In theory, for the same substance they should be the equal. In actuality, there are slight variations. From a general chem class perspective however, the answer is yes.

Answer 8

No, they are the same. It just depends on whether heat energy is being gained or lost.

Answer 9

It remains constant.

Answer 10

the temperature changes