Heating and Cooling Curve

heat of vaporization

The amount of energy required for the liquid at its boiling point to become a gas

A

Where is the substance only solid?

C

Where is the substance only liquid?

E

Where is the substance only gas?

heat is being absorbed

Is heat being absorbed or released at point B on the graph?

heat is being released

Is heat being absorbed or released at point A on the graph?

D

Where is evaporation (vaporization) happening?

B

Where is melting happening?

1, 3, 5

Which part of the graph is kinetic energy increasing?

2, 4

Which part of the graph is Potential energy increasing?

t4

The sample starts as a gas, and heat is removed at constant rate. At which time does the sample contain the most liquid?

t1

The sample starts as a gas, and heat is removed at constant rate. At which time does the sample contain the mostly gas?

Cooling Curve

Is this graph a heating curve or cooling curve?

Heating curve

Is this graph a heating curve or cooling curve?