Unit 4 vocab

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Across
  1. 2. that is present at the end of a chemical reaction
  2. 3. occurs when two or more combine to form a single product
  3. 5. a chemical formula showing the simplest ratio of elements in a compound instead of a toal # of elements
  4. 8. ionic compound that contains a cation and anion
  5. 9. a measure of how acidic or basic a substance is
  6. 10. the mass in grams of one mole of a substance
  7. 11. tells you mass by what percent each element is present in a compound
  8. 14. chemical substance,usually liquid, reacts with other substances
  9. 15. when an acid or base react to form water and a salt
  10. 16. chemical formula that gives total # of atoms each element present in a molecule
Down
  1. 1. occurs when parrts of 2 ionic compounds are exchanged, making 2 new compounds
  2. 4. a reaction in which a substance reacts with oxugen gas, releasing energy in the form of light and heat
  3. 6. a reaction in which a compound breaks down into 2 or more simpler substances
  4. 7. molecules that contain only two atoms bonded to one another
  5. 12. substance that can neutralize acids
  6. 13. a substance that enters into and is altered in the course of a chemical reaction