Chemical vs. Physical Changes

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new substances. Examples include burning, rusting, and spoiling.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance but does not change its chemical composition. Examples include melting, freezing, and dissolving.

Front

When something burns, what type of change is it?

Back

Chemical change.

Front

What happens to milk when it spoils?

Back

It undergoes a chemical change.

Front

What type of change occurs when ice melts into water?

Back

Physical change.

Front

What is an example of a physical change?

Back

Melting of ice, boiling of water, or dissolving sugar in water.

Front

What is an example of a chemical change?

Back

Burning wood, rusting iron, or baking a cake.

Front

Is mixing air into egg whites a physical or chemical change?

Back

Physical change.

Front

What is the difference between a chemical change and a physical change?

Back

A chemical change creates new substances, while a physical change does not.

Front

What happens to gallium when it melts?

Back

It becomes a puddle of gallium metal, which is a physical change.