1. Biochemistry

2. Basic Elements 99% of all living things are: Sulfur (S) Carbon (C) Hydrogen (H) Nitrogen (N) Oxygen (O) Phosphorus (P)

3. Chemistry and Life ORGANIC molecules Anything that contains Carbon (C) Ex. Sugar (C 6 H 12 O 6 ) All Living Things (animals, plants, etc.) INORGANIC molecules Do NOT contain carbon Ex. H 2 O, O 2 Atmosphere, Rocks, Waste products

4. Acids and Bases Measured as pH On a scale from 1-14 pH = a measure of the number of hydrogen atoms Substances that are very acidic or very basic are dangerous to living things

6. Density Amount of matter in any given space Density = Mass / Volume

7. Solutions Mixture of two or more substances Solvent = does the dissolving (ex. Water) Solute = is dissolved (ex. Salt)