Front

Is a rusting bicycle a chemical or physical change?

Back

Chemical change: Rusting involves a reaction with oxygen, resulting in a new substance (rust).

Front

Is burning wood a chemical or physical change?

Back

Chemical change: Burning wood transforms it into ash, smoke, and gases, creating new substances.

Front

Which is an example of a physical property?

Back

Color: Physical properties can be observed without changing the substance's identity.

Front

Which is an example of a chemical change?

Back

Examples include burning, rusting, or cooking, where new substances are formed.

Front

Which is an example of a physical change?

Back

Examples include melting ice, boiling water, or breaking glass, where the substance remains the same.

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

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is an example of a reversible physical change?

Back

Freezing and melting of water: Ice can melt back into water.

Front

What is an example of an irreversible chemical change?

Back

Burning wood: Once burned, it cannot be turned back into wood.

Front

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

Back

Physical properties can be observed without changing the substance, while chemical properties can only be observed during a chemical reaction.