Unit 2 Review

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Across
  1. 2. molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
  2. 3. a chemical reaction releases more energy than it absorbs
  3. 5. change substances into different substances by breaking and forming chemical bonds
  4. 11. when the products and reactants are at the same concentration
  5. 12. polymers that are made up of monomers called nucleotides
  6. 15. molecules made of carbon, hydrogen, and oxygen
  7. 17. substances changes during a chemical reaction
  8. 18. substances made by a chemical reaction
Down
  1. 1. chains of carbon atoms bonded to hydrogen atoms
  2. 4. large molecule made of several parts
  3. 6. a chemical reaction absorbs more energy that it releases
  4. 7. catalysts for chemical reactions in living things
  5. 8. the amount of energy that will break a bond between two atoms
  6. 9. nonpolar molecules that include fats, oils, and cholesterols
  7. 10. a polymer made of monomers called amino acids
  8. 13. increases the rate of the chemical reaction
  9. 14. the amount of energy that needs to be absorbed for a chemical reaction to start
  10. 16. specific reactants that an enzyme acts on