Some Things I learned about Solids, Liquids, and Gas

1. Gas was discovered by Jan Bapista van Helmont.
2. Joseph Priestley discovered oxygen.
3. Antoine Lavisier learned how to weigh gas. He also proved that oxygen is necessary to breathe, and to burn, as in fire and animals.
4. Joseph Priestley invented soda water by running carbon dioxide though water.
5. Helium weighs less than air.
6. Most solids shrink when they get colder. Ice expands.
7. Hot air is lighter than cold air.
8. Some gases have color. Nitrogen dioxide is brown. Chlorine gas is yellow-green.
9. Some gases have a smell. Hydrogen smells like rotten eggs. Chlorine gas has a strong, bad smell.
10. Micheal Faraday turned chlorine gas to a liquid in 1823.
11. All snow crystals have six sides and stick together to make snowflakes.