Physical/Chemical Changes

Front

What is a chemical change?

Back

A change in which new substances are formed, often involving a chemical reaction.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance, such as changes in state or appearance.

Front

What is an example of a precipitate?

Back

A solid formed from two liquids combining.

Front

Can a physical change result in a color change?

Back

Yes, for example, a red candy dissolving in water turns the water pink.

Front

What happens during a chemical change?

Back

New substances are formed, and energy may be absorbed or released.

Front

What is an example of a physical change?

Back

Melting ice into water.

Front

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

Back

A physical change does not create new substances, while a chemical change does.

Front

What is an indicator of a chemical change?

Back

Color change, gas production, temperature change, or formation of a precipitate.

Front

What is an example of a chemical change?

Back

Burning wood, which produces ash and smoke.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.