SC.5.P.9.1

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The Effects of Temperature on Physical and Chemical Changes

The student knows that common materials (e.g. water) can be changed from one state to another by heating and cooling.

A physical change takes place when a substance changes in size, shape or form. Many times a

physical change is due to a change in temperature.

Drying Clothes

Physical Change

Melting ButterTemperature Changes

Evaporation

Key Word(s): Boiling

Evaporation occurs when a liquid changes into a gas.

MeltingMelting occurs when a solid changes into a liquid.

Key Word(s): Increase in Temperature, Heat, Warm

Freezing

Key Word(s): Ice, Cold, Snow, Decrease in Temperature

CondensationCondensation occurs when a gas changes into a liquid

Key Word(s): Dew, Fog, Humidity

Freezing occurs when a liquid changes into a solid

A chemical change takes place when a substance is completely altered.

Rusted Car

Burned Wood

Rotten Food

Chemical Change

Chemical Change

Burning Rusting

Chemical Change

Rotting Chemical Reactions

Physical and Chemical Changes

A change that takes place when a substance changes in size, shape or form. The particles of

matter do not change.

Physical Change Chemical ChangeA change that takes place when a substance changes in

size, shape or form. The particles of matter do not change.

A chemical change takes place when a substance is completely altered. The particles of matter do

change.

A change that takes place when a substance is completely altered. The particles of matter do change.

Sun burned skin

Sun burned skinAdding salt to water

Adding salt to water

Sawing Wood

Clothes Dryer

Burning Wood

Burning Wood

Car Burning Gas

Car Burning Gas

Baking a pie

Baking a pieAdding dirt to a puddle

Adding dirt to a puddle