-Matter

﻿MATTER  **﻿Matter** is anything that occupies space and has mass and volume. All objects are made up of matter in the form of particles and atoms. There are four different states of matter: **solid**, **liquid** , **gas** , and **plasma**. In **solids**, particles are packed tightly together and are not easily compressed. Therefore, solids keep their initial shape and volume. **Liquids** have an indefinite shape and are not easily compressed. The particles flow freely from one location to another whilst keeping the same volume. **Gases** have an indefinite shape and an indefinite volume. The particles are very far apart, and because of that, gases are easily compressed.  **Plasma** is an ionized gas and its particles are electrically charged. 99% of our visible universe is made up of plasma. For example, plasma can be found in flames and lightning. media type="youtube" key="xYFAj50c7xM?rel=0" height="432" width="576" align="right"