unit 4

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Across
  1. 8. tells you by mass what percent of each element is present in a compound
  2. 13. a substance that takes part in and undergoes change during a reaction.
  3. 16. a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products
Down
  1. 1. a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.
  2. 2. occur when parts of two ionic compounds are exchanged, making two new compounds.
  3. 3. a chemical reaction in which one element replaces another in a compound
  4. 4. substance produced by the reaction of an acid with a base
  5. 5. pure elements that form molecules consisting of two atoms bonded together
  6. 6. a chemical substance that neutralizes alkalis
  7. 7. a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.
  8. 8. a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline.
  9. 9. an article or substance that is manufactured or refined for sale.
  10. 10. the process of burning something
  11. 11. the mass of a given chemical element or chemical compound (g) divided by the amount of substance
  12. 12. a reaction in which a compound breaks down into two or more simpler substances
  13. 14. a chemical process in which two or more simple elements or compounds combine to form a more complex product
  14. 15. a substance that can neutralize the acid by reacting with hydrogen ions