Matter and Chemical/Physical Properties

Front

What type of change is copper tarnishing?

Back

Chemical change.

Front

How can a piece of paper undergo a chemical change?

Back

By burning the paper with fire.

Front

What happens when steel wool is burned?

Back

It undergoes a chemical change.

Front

What is a pure substance?

Back

A pure substance is an element or a compound.

Front

What is NaHCO₃?

Back

It is a compound.

Front

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

Back

A physical change does not alter the substance's chemical composition, while a chemical change does.

Front

Give an example of a physical change.

Back

Melting ice.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that retain their individual properties.

Front

What is rusting an example of?

Back

Rusting is an example of a chemical change.