Physical & Chemical Properties & Changes

Front

What is a chemical change?

Back

A chemical change creates a new substance and cannot be undone.

Front

What happens when iron is exposed to air over a long period?

Back

It forms rust, which is an example of a new substance forming.

Front

How can you identify a chemical change?

Back

A chemical change can be identified by the formation of a new substance.

Front

What occurs when mixing milk and vinegar?

Back

A chemical change occurs, resulting in the production of a solid.

Front

What observations indicate a chemical change has occurred?

Back

Unexpected color change and temperature change.

Front

What is a physical change?

Back

A physical change alters the form or appearance of a substance but does not create a new substance.

Front

Can a chemical change be reversed?

Back

No, a chemical change cannot be undone.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is rusting an example of?

Back

Rusting is an example of a chemical change.

Front

What is the difference between a physical and chemical change?

Back

A physical change does not create a new substance, while a chemical change does.