Properties and Classification of Matter

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded together. Examples include air, salad, and saltwater.

Front

Which of the following is a mixture? (Air, Oxygen - O2, Carbon dioxide - CO2)

Back

Air is a mixture because it contains various gases, including nitrogen, oxygen, and carbon dioxide.

Front

What happens to the charge of a neutral atom when it gains an electron?

Back

The overall charge of the atom becomes negative because electrons carry a negative charge.

Front

What two subatomic particles are found in the nucleus of an atom?

Back

Protons and neutrons are the two subatomic particles found in the nucleus.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is a balanced equation in chemistry?

Back

A balanced equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved.

Front

What is a characteristic of a solid state of matter?

Back

A solid has a definite shape and volume.

Front

What is the difference between a solid and a liquid?

Back

A solid has a definite shape and volume, while a liquid has a definite volume but takes the shape of its container.