There are three main states of matter there solids, liquids, and gases. Solids include wood, metal, glass, dirt, paper, etc... Liquids include, water, milk, juice, fuel, etc... Gases include, air, methane, carbon dioxide, smoke, etc... Solids atoms are dense and vibrate in a small area, they keep there form unless smashed. Liquids atoms are not as dense as a solid but they vibrate in small areas but can pass each other, a liquid will take up as much surface area as it can. Gases atoms move freely around and frequently collide, gas will spread in a 3 denominational area.
