Physical vs Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and the rearrangement of atoms. Examples include rusting, burning, and cooking.

Front

Is sharpening a pencil a physical or chemical change?

Back

Physical change.

Front

What happens to the chemical composition during a physical change?

Back

The chemical composition remains the same during a physical change.

Front

Is cooking an egg a physical or chemical change?

Back

Chemical change.

Front

What is an example of a chemical change?

Back

Copper metal turning green is an example of a chemical change.

Front

What type of change is ice cream melting?

Back

Physical change.

Front

What happens to the properties of a substance during a chemical change?

Back

The properties of the substance change, and new substances are formed.

Front

Is stepping on a Coke can a physical or chemical change?

Back

Physical change.

Front

What are some indicators of a chemical change?

Back

Indicators of a chemical change include color change, temperature change, gas production, and the formation of a precipitate.