Chemical and Physical changes

Front

What is the definition of matter?

Back

Matter is anything that has mass and takes up space.

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.

Front

Give an example of a physical change.

Back

Shattering a glass bottle is an example of a physical change.

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change.

Front

What happens to the mass of water when it freezes?

Back

The mass of water remains the same when it freezes; it weighs 20 grams before and after freezing.

Front

What is the weight of 2 liters of Sprite?

Back

2 liters of Sprite weighs about 2 kg.

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 new substances being formed.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.