Showing changes of state
on a graph
Y8B
Heating curve/cooling curve

It shows how the temperature o f a substance changes with
time.

Heating curve: from solid to gas (increasing temperature).

Cooling curve: from gas to solid (decreasing temperature).
Heating curve of water
BP
MP
Time (min)
Cooling curve water
Condensation
point
Condensation/boiling
Freezing/melting
Freezing point