Physical and Chemical Changes Test

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, indicating how a substance interacts with other substances.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing the substance's chemical identity.

Front

What is an example of a chemical change?

Back

Burning wood, which transforms it into ash and gases.

Front

What is an example of a physical change?

Back

Melting ice into water, which does not change the chemical composition of H2O.

Front

What evidence indicates a chemical change has occurred?

Back

Formation of a precipitate, color change, gas production, or temperature change.

Front

What happens to the molecules during a physical change?

Back

The arrangement of molecules may change, but their chemical composition remains the same.

Front

What happens to the molecules during a chemical change?

Back

The chemical bonds between atoms are broken and formed, resulting in new substances.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Physical change, as the sugar can be recovered by evaporating the water.

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Front

What is an example of a physical property?

Back

Color, odor, boiling point, melting point, and density.