JDES Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and cutting.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and includes processes like burning, rusting, and digestion.

Front

Give an example of a physical change.

Back

Ice melting is an example of a physical change.

Front

Give an example of a chemical change.

Back

Burning wood is an example of a chemical change.

Front

What happens to the mass of a substance during a physical change?

Back

The mass of a substance remains the same during a physical change.

Front

What happens to the mass of a substance during a chemical change?

Back

The mass of a substance may change during a chemical change due to the formation of new substances.

Front

Is cutting a piece of paper a physical or chemical change?

Back

Cutting a piece of paper is a physical change.

Front

What is rusting?

Back

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture, forming iron oxide.

Front

What is an example of a process that is NOT a chemical change?

Back

Folding paper is NOT a chemical change.

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.