Chapter 2 The Chemistry Of Life Worksheet Answer Key Chapter 2 Chemistry Of Life Test Answer Key answer key 1 Chapter 2 chemistry of life test answer key. a 2. b 3. c 4. c 5. a 6 Chapter 2 chemistry of life test answer key. b 7. c 8. Polarity in a water molecule is caused by an uneven distribution of electrons between the oxygen and hydrogen atoms.