Physical Changes, Chemical Changes, States of Matter, and pH

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance.

Front

What are intensive properties?

Back

Properties where sample size doesn’t matter.

Front

Give examples of physical changes.

Back

Boiling point, Color, Temperature, Luster, Hardness.

Front

What are extensive properties?

Back

Properties that depend on sample size.

Front

Give examples of extensive properties.

Back

Volume, Mass, Size, Weight, Length.

Front

What happens to the appearance, shape, or size of a substance during a physical change?

Back

They may be altered.

Front

Do physical changes change the chemical identity of a substance?

Back

No, they do not change the chemical identity.

Front

Give examples of physical changes that do not change chemical identity.

Back

Chopping wood, Crushing a can, Sublimation of dry ice, Dissolving sugar in water.

Front

What is a chemical change?

Back

The process in which one or more substances change into entirely new substances.

Front

Give examples of chemical changes.

Back

Iron rusting, Burning wood, Metabolism, Cooking an egg, Baking a cake, Electroplating, Rotting banana, Vinegar and baking soda mixture, Fireworks, Chemical battery.