BIOLOGY 130: STUDY PACKET 2: Basic Chem, Water, Carbohydrates, Lipids Answer on this sheet or a separate sheet – must be stapled when turned in 1) Why do we need to know some chemistry in order to understand biology? 2) Name and briefly describe the three fundamental subatomic particles that make up an atom. Draw a planetary model of a carbon atom and an oxygen atom with the various subatomic particles. Show how electrons are placed into the orbitals or energy levels. 3a) What are the three major types of chemical bonds that can form between atoms and how are they formed? b) What are the 2 types of covalent bonds that can form and what properties do they determine? 4) Describe the special properties of water that exist due to its unique structure. Give an example of how each of these properties are important biologically. 5) Why are atoms like carbon and oxygen so highly reactive? 6) Briefly describe a chemical reaction. What are the starting and ending materials of a chemical reaction called? 7)Each of the following elements is found in living organisms. For each symbol shown, name the element, list the atomic number, the atomic mass, the number of protons, neutrons and electrons. (the only ones you should memorize are C, H, N and O.) Symbol Element Atomic