Chapter 7 vocabulary

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Across
  1. 4. New substances formed as a result of a chemical reaction
  2. 5. The energy stored in chemical bonds
  3. 6. Numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  4. 7. A chemical reaction that releases energy to its surroundings
  5. 9. A chemical reaction in which a compound breaks down into two or more simpler substances
  6. 11. A chemical reaction in which one element takes the place of another element in a compound
  7. 12. A chemical reaction that absorbs energy from its surroundings
Down
  1. 1. reaction A chemical reaction in which two or more substances react to form a single substance
  2. 2. A chemical reaction in which two compounds exchange positive ions and form two new compounds
  3. 3. A representation of a chemical reaction in which the reactants and products are expressed as formulas
  4. 8. An amount of a substance that contains approximately 6.02x10’23 particles of the substance
  5. 10. The mass of one mole of the substance
  6. 13. A substance that undergoes change in a chemicalreactant