Matter is all around us. You proved in section one that air is matter. Water is matter, your desk is matter, and you are matter.

All matter is made up of elements, compounds, or mixtures.

Interactive exercise. Assistance may be required. Click on each image to learn more about what makes up matter.

All matter can be found in four phases, or states. The four states of matter are solid, liquid, gas, and plasma.

Interactive exercise. Assistance may be required. Click on each image below to learn more about each state of matter.