Mr. L Physical and Chemical Changes review

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 changes in state (like melting or freezing) and changes in shape or size.

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 can be indicated by color change, gas formation, or temperature change.

Front

What indicates a chemical change?

Back

Indicators of a chemical change include color change, formation of gas (bubbles), temperature change, and formation of a precipitate.

Front

Which of the following does NOT indicate a chemical change? Color change, State of matter change, Formation of gas.

Back

State of matter change does NOT indicate a chemical change.

Front

Is baking a cake a physical or chemical change?

Back

Baking a cake is a chemical change.

Front

What happens to water when it freezes?

Back

When water freezes, it undergoes a physical change from liquid to solid (ice).

Front

Is glass breaking a physical or chemical change?

Back

Glass breaking is a physical change.

Front

What happens when iron rusts?

Back

When iron rusts, it undergoes a chemical change, forming iron oxide.

Front

What is an example of a physical change?

Back

An example of a physical change is ice melting into water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is burning wood.