Matter is everything that has mass (weight) and takes up any given space. All Matter will be made out of atoms. Matter can exist in four states:
- Solids have their atoms tightly packed together. They have a fixed shape.
- Liquids have their atoms in a non-fixed shape. They would be sliding around each other. They take up the shape of the bottom of their container
- Gases have their atoms spaced far apart from each other. They take the shape of their container.
- Plasma is formed when a gas is exposed to very high temperatures, causing the electrons to be stripped off from the rest of the atom, causing a sea of electricity to be formed.
One example that follows the states of matter is water.
Conversion between states
Water, when exposed to low temperatures, freezes into a solid, but when brought to room temperature, it melts into liquid water. When heated to high temperatures, it boils and evaporates into a gas, but when brought back to room temperature and then back into low temperatures, condenses back into a liquid and freezes into a gas again.