Chapter 5 Vocabulary

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Across
  1. 2. the fragments of molecules that have at least one electron available for bonding
  2. 3. the decomposition of a compound by an electric current
  3. 4. a substance that is the result of a chemical change
  4. 5. a substance that changes the rate of chemical reactions without being consumed
  5. 6. a reaction in which atoms of one element take the place of atoms of another element in a compound
  6. 7. a reaction that transfers energy from the reactants to the surroundings as heat
  7. 8. a reaction in which one compound breaks into at least two products
  8. 11. a reaction in which energy is transferred to the reactants as heat from the surroundings
  9. 13. the state in which a chemical reaction and its reverse occur at the same time and at the same rate
  10. 15. a protein that speeds up a specific biochemical reaction
  11. 16. a reaction of at least two substances that forms a new more complex compound
  12. 17. a substance that undergoes a chemical change
  13. 18. an equation that uses chemical formulas and symbols to show the reactants and products in a chemical reaction
Down
  1. 1. a reaction in which a gas, a solid precipitate, or a molecular compound is formed from the apparent exchange of ions between two compounds
  2. 9. a reaction in which a compound and oxygen burn
  3. 10. the energy stored within atoms and molecules that can be released when a substance reacts
  4. 12. a reaction that occurs when electrons are transferred from one reactant to another
  5. 14. the specific substance affected by an enzyme