Chemical and Physical Changes Flashcard

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances with different properties.

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

Give an example of a chemical change.

Back

Burning wood.

Front

Give an example of a physical change.

Back

Melting ice.

Front

What happens during a chemical change?

Back

New substances are formed, and energy may be absorbed or released.

Front

What is rusting?

Back

A chemical change where iron reacts with oxygen and moisture to form iron oxide.

Front

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

Back

Chemical changes result in new substances, while physical changes do not.

Front

What is an indicator of a chemical change?

Back

Production of gas, change in color, temperature change, or formation of a precipitate.

Front

What is an example of a reversible physical change?

Back

Freezing water.

Front

What is an example of an irreversible chemical change?

Back

Cooking an egg.