Question

word bank: condensation, melting, freezing, endothermic, exothermic, evaporation phase change diagram 1. 2. 3. 4. 5. 6. gas liquid solid temperature heat energy

Explanation:

Step1: Identify phase - change from solid to liquid

Melting is the process of changing from a solid to a liquid. So, 2 is melting.

Step2: Identify phase - change from liquid to solid

Freezing is the process of changing from a liquid to a solid. So, 3 is freezing.

Step3: Identify phase - change from liquid to gas

Evaporation (or vaporization) is the process of changing from a liquid to a gas. So, 6 is evaporation.

Step4: Identify phase - change from gas to liquid

Condensation is the process of changing from a gas to a liquid. So, 5 is condensation.

Step5: Identify heat - transfer nature of melting

Melting requires heat input, so it is endothermic. So, 1 is endothermic.

Step6: Identify heat - transfer nature of freezing

Freezing releases heat, so it is exothermic. So, 4 is exothermic.

Answer:

1. Endothermic
2. Melting
3. Freezing
4. Exothermic
5. Condensation
6. Evaporation