Chemical vs Physical Changes

Front

What is a chemical change?

Back

A process where one or more substances are transformed into new substances with different properties.

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

Give an example of a chemical change.

Back

Burning wood, which produces ash and smoke.

Front

Give an example of a physical change.

Back

Melting ice into water.

Front

What happens to the chemical composition during a chemical change?

Back

It changes, resulting in the formation of new substances.

Front

What happens to the chemical composition during a physical change?

Back

It remains the same; the substance retains its original chemical identity.

Front

Is rusting of iron a physical or chemical change?

Back

Chemical change.

Front

Is dissolving salt in water a physical or chemical change?

Back

Physical change.

Front

What is an indicator of a chemical change?

Back

Production of gas, change in color, formation of a precipitate, or change in temperature.

Front

What is an indicator of a physical change?

Back

Change in state (solid, liquid, gas) or shape without a change in chemical composition.