Chemical vs Physical Changes - M

Front

What is a physical change?

Back

A physical change is a change in which the form or appearance of a substance changes, but its chemical composition remains the same. Examples include breaking a cracker or melting ice.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include baking soda reacting with vinegar or burning a candle.

Front

When you break a cracker into pieces, is it a chemical or physical change?

Back

It is a physical change.

Front

What happens when baking soda and vinegar mix?

Back

They undergo a chemical change, producing a bubbly reaction.

Front

Is cracking a glow stick a chemical reaction?

Back

Yes, cracking a glow stick initiates a chemical reaction that produces light.

Front

Is adding sugar to coffee a physical or chemical change?

Back

It is a physical change.

Front

Is burning a candle a physical or chemical change?

Back

It is a chemical change.

Front

What is an example of a physical change?

Back

An example of a physical change is freezing water to make ice.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

Front

Can physical changes be reversed?

Back

Yes, many physical changes can be reversed, such as melting and freezing.