Unit 5 Crossword

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Across
  1. 4. a substance with two or more elements
  2. 5. a chemical reaction between substances always resulting in water and carbon dioxide
  3. 9. the reaction of simple substances resulting in a compound
  4. 11. an element consisting of two atoms
  5. 12. a reaction where one element replaces another in a compound
  6. 13. the small number below the element that tells how many atoms that element has
  7. 14. a charged particle
Down
  1. 1. a reaction where a compound breaks down into simpler substances
  2. 2. a substance(s) that is there since the start of the reaction and changes as the reaction goes on
  3. 3. a reaction in which the ions of the compounds exchange
  4. 6. a number placed in front of an element that tells how many atoms of that element are present
  5. 7. the substance(s) that are the result of the reaction and arre present in the end
  6. 8. the transferring of electrons between atoms
  7. 10. the sharing of electrons between atoms