Physical and Chemical Changes/Properties

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.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, involving a rearrangement of atoms.

Front

Give an example of a physical change.

Back

An example of a physical change is melting ice into water.

Front

Give an example of a chemical change.

Back

An example of a chemical change is rust forming on iron.

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.

Front

Is boiling water a physical or chemical change?

Back

Boiling water is a physical change.

Front

Is burning wood a physical or chemical change?

Back

Burning wood is a chemical change.

Front

What does it mean if a substance changes size?

Back

Changing size is typically a physical change and does not indicate a chemical reaction has occurred.

Front

What is the significance of temperature change in a chemical reaction?

Back

A change in temperature can indicate that a chemical reaction has occurred, as it often involves the release or absorption of energy.

Front

Is the formation of a gas a sign of a physical or chemical change?

Back

The formation of a gas is typically a sign of a chemical change.