Physical and Chemical Changes Review

Front

Stretching a rubber band is an example of a ____ change.

Back

Physical change: A change that does not alter the chemical composition of a substance.

Front

Melting butter is an example of a ____ change.

Back

Physical change: A change in state from solid to liquid without changing the substance's chemical structure.

Front

_______ changes often cause fizzing or foaming.

Back

Chemical change: A change that results in the formation of new substances, often accompanied by gas release.

Front

Boiling water is an example of a _____ change.

Back

Physical change: A change in state from liquid to gas without altering the chemical composition.

Front

____ changes may result in the formation of a precipitate when liquids combine to form a solid.

Back

Chemical change: A reaction that produces a solid from two liquid reactants.

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

Give an example of a physical change.

Back

Examples include melting ice, dissolving sugar in water, or breaking a glass.

Front

Give an example of a chemical change.

Back

Examples include rusting iron, burning wood, or baking a cake.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.