The staircase, the air, your water bottle, your shoes — all of these are matter. But none of them is made of just one thing. Most are two or more substances mixed together. Let's start by understanding what "mixed" really means.
- Matter is anything that has weight and takes up space.
- The staircase, air, water, food, and clothes are all matter.
- All matter is made up of tiny particles.
- Most things are two or more substances mixed together.