Match the phase change to its description.

Column A
1.
gas to liquid:
gas to liquid
2.
liquid to solid:
liquid to solid
3.
solid to liquid:
solid to liquid
4.
liquid to gas:
liquid to gas
5.
solid to gas:
solid to gas
6.
gas to solid:
gas to solid
Column B
a.vaporization
b.sublimation
c.freezing
d.condensation
e.deposition
f.melting

Matching the phase change to its description:

Column A Column B

1. gas to liquid: d. condensation
2. liquid to solid: c. freezing
3. solid to liquid: f. melting
4. liquid to gas: a. vaporization
5. solid to gas: b. sublimation
6. gas to solid: e. deposition

To match the phase change to its description, let's go through each phase change and its corresponding description:

Column A
1. gas to liquid: The phase change from a gaseous state to a liquid state.
2. liquid to solid: The phase change from a liquid state to a solid state.
3. solid to liquid: The phase change from a solid state to a liquid state.
4. liquid to gas: The phase change from a liquid state to a gaseous state.
5. solid to gas: The phase change from a solid state to a gaseous state.
6. gas to solid: The phase change from a gaseous state to a solid state.

Column B
a. vaporization: The process by which a liquid changes into a gas, which includes both boiling and evaporation.
b. sublimation: The process by which a solid directly changes into a gas without passing through the liquid phase.
c. freezing: The process by which a liquid changes into a solid.
d. condensation: The process by which a gas changes into a liquid.
e. deposition: The process by which a gas changes into a solid without passing through the liquid phase.
f. melting: The process by which a solid changes into a liquid.

Now, let's match the phase changes to their descriptions:

1. gas to liquid: d. condensation
2. liquid to solid: c. freezing
3. solid to liquid: f. melting
4. liquid to gas: a. vaporization
5. solid to gas: e. deposition
6. gas to solid: b. sublimation

So, the matched phase changes and their corresponding descriptions are as follows:

1. gas to liquid: condensation
2. liquid to solid: freezing
3. solid to liquid: melting
4. liquid to gas: vaporization
5. solid to gas: deposition
6. gas to solid: sublimation

Column A:

1. liquid to gas: d.condensation
2. solid to liquid: f.melting
3. solid to gas: b.sublimation
4. liquid to solid: c.freezing
5. gas to solid: e.deposition
6. gas to liquid: a.vaporization