Generation Genius: Physical & Chemical 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

Give an example of a physical change.

Back

Melting ice is an example of a physical change.

Front

Give an example of a chemical change.

Back

Rust forming on iron 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 gas do we breathe that is necessary for burning?

Back

Oxygen is necessary for burning.

Front

What gas is produced when something burns?

Back

Carbon dioxide is produced when something burns.

Front

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

Back

It is a physical change.

Front

What happens to milk when it spoils?

Back

It undergoes a chemical change.

Front

What sound does hydrogen make in a flame test?

Back

Hydrogen makes a 'pop' sound in a flame test.