Chemical and Physical Changes

Front

What is a Chemical Change?

Back

A process where substances combine or break apart to form new substances, often with different properties.

Front

What is a Physical Change?

Back

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

Front

Can a Chemical Change be undone?

Back

No, chemical changes usually cannot be reversed.

Front

Can a Physical Change be undone?

Back

Yes, physical changes can often be reversed.

Front

What happens when baking soda and vinegar are mixed?

Back

They undergo a chemical change, producing carbon dioxide gas.

Front

What is an example of a Physical Change?

Back

Melting ice into water.

Front

What is an example of a Chemical Change?

Back

Burning wood in a fireplace.

Front

What occurs when cake batter is baked?

Back

A chemical change occurs, transforming the batter into a cake.

Front

What is rusting an example of?

Back

A chemical change, as iron reacts with oxygen to form rust.

Front

What happens to copper roofs over time?

Back

They undergo a chemical change, changing color due to oxidation.