PHASE Changesand

States of Matterexample of PHYSICAL properties

•Phase Change is the change of an object from one state of matter into another.

•Phase Change occurs when there is a gain or loss of energy.•Sometimes you need a lot of energy for a phase change.

Phase Change

• Temperature is a measure of the speed of moving particles.

• High Temperature = Fast Movement = High Energy

• Low Temperature = Slow Movement = Low Energy

Temperature

Heating curve of water- endothermic (heat

absorbed)

Red line=increase in potential energy

Blue line= increase in kinetic energy

Cooling curve –

exothermic—(heat released)