Chemical vs. Physical Changes

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without changing its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

Can you give an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

Can you give an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What happens to the gas during a physical change?

Back

The same gas is present before and after the change.

Front

What happens to the gas during a chemical change?

Back

New gases may be formed as a result of the change.

Front

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

Back

It is a physical change.

Front

What is an indicator of a chemical change?

Back

A change in color, temperature, or the production of gas.

Front

What happens during a flame test with hydrogen?

Back

It makes a popping sound.

Front

What is an example of a physical change involving cutting?

Back

A chainsaw cutting down a tree is a physical change.