Chemical and Physical Changes Test Review

Front

What happens to the substance during a physical change?

Back

The substance remains the same; its physical properties may change, but its chemical composition does not.

Front

What is an example of a physical change?

Back

Tearing paper or melting ice.

Front

What is an example of a chemical change?

Back

Burning wood or rusting iron.

Front

What is left behind when you evaporate a solution?

Back

The solute, such as Kool-Aid crystals, is left behind after the solvent evaporates.

Front

What occurs when heat is added to ice?

Back

The ice melts and turns into water.

Front

What occurs when heat is removed from water?

Back

The water freezes and turns into ice.

Front

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

Back

A physical change affects only physical properties, while a chemical change results in the formation of new substances.

Front

Is dissolving sugar in water a physical or chemical change?

Back

It is a physical change because the sugar can be recovered.

Front

What is an example of a reversible physical change?

Back

Freezing and melting of water.

Front

What is an example of an irreversible physical change?

Back

Breaking a glass or tearing paper.