Matter - Lesson 3: Physical and chemical changes

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What is a physical change?

Back

A physical change is a change that does not alter the chemical composition of a substance. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include burning, rusting, and cooking.

Front

What happens to atoms during a chemical change?

Back

The atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics.

Front

Is melting ice a chemical change?

Back

No, melting ice is a physical change.

Front

Is burning wood a chemical change?

Back

Yes, burning wood is a chemical change because it produces new substances like ash and smoke.

Front

What is an example of a physical change?

Back

An example of a physical change is melting butter.

Front

What is an example of a chemical change?

Back

An example of a chemical change is vinegar reacting with baking soda.

Front

Can matter be created or destroyed?

Back

No, matter cannot be created or destroyed; it can only be transformed or changed.

Front

What is rusting?

Back

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