Phase Diagrams #2

Use the diagram below when answering each of the following questions.

According to the diagram, during a phase change the temperature:
1. remains constant
2. increases
3. decreases
4. fluctuates
At normal atmospheric pressure, water freezes at:
1. 120 ºC
2. 100 ºC
3. 0 ºC
4. -20 ºC
At normal atmospheric pressure, water boils at:
1. 120 ºC
2. 100 ºC
3. 0 ºC
4. -20 ºC
The phase of water present along "Leg A" of the diagram is:
1. solid
2. liquid
3. vapor
The phase of water present along "Leg C" of the diagram is:
1. solid
2. liquid
3. vapor
The phase of water present along "Leg E" of the diagram is:
1. solid
2. liquid
3. vapor
The phase change taking place, in the left-to-right direction, along Leg "B" is:
1. freezing
2. melting
3. boiling
4. condensation
The phase change taking place, in the left-to-right direction, along Leg "D" is:
1. freezing
2. melting
3. boiling
4. condensation
The phase change taking place, in the right-to-left direction, along Leg "D" is:
1. freezing
2. melting
3. boiling
4. condensation
The phase change taking place, in the right-to-left direction, along Leg "B" is:
1. freezing
2. melting
3. boiling
4. condensation
According to the diagram, freezing requires
1. absorption of energy
2. removal of energy
3. no energy change
According to the diagram, condensation requires
1. absorption of energy
2. removal of energy
3. no energy change
According to the diagram, boiling requires
1. absorption of energy
2. removal of energy
3. no energy change
According to the diagram, melting requires
1. absorption of energy
2. removal of energy
3. no energy change
According to the diagram, ice can be colder than 0 ºC:
1. True
2. False
According to the diagram, steam can be hotter than 0 ºC:
1. True
2. False