Question

3(a). Diagram 3 shows some processes that involve the changes in the

state of matter. Choose the processes that release heat.*​

Answer 1

C

D

Step-by-step explanation:

The processes of freezing sublimation releases heat to environment.

Freezing is a phase change by which a liquid changes to solid.

Sublimation is a phase change in which a gas changes to solid.

• Phase changes by which a substance returns back to the state of orderliness involves a loss of heat.
• Sublimation is can be from solid to gas or gas to solid.
• In the process from gas to solid, heat is released.
• But from solid to gas, heat is absorbed.