Atoms, Molecules and Chemical Reactions
Matter is anything that has mass and takes up space. Matter is made up of atoms and molecules. Gases are matter made of single atoms or molecules that are very far apart, moving rapidly. Liquids are made up of atoms or molecules that are closer together so you can see the substance, but they still move a lot so liquids flow and take shape of the container they are in. Solids are atoms and molecules that are jammed closely together, they are still moving but they don't change their position, therefore the solid maintains it's shape.
An atom is a…
