Chemistry Crossword Puzzle

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Across
  1. 2. a chemical reaction of a powerful release when oxygen is added
  2. 4. a substance made up of two or more elements
  3. 7. a number that comes after an elemental symbol
  4. 9. replacement a chemical reaction where one reactant exchanges one of its elements with another reactant
  5. 10. a charged atom
  6. 11. an element that you start with in a reaction
  7. 13. an element that isn't naturally found by itself in nature
Down
  1. 1. a chemical reaction where one or more elements is broken down into one or more elements
  2. 3. a number you place in front of a reactant; used to balance equations
  3. 5. a chemical reaction where two reactants exchange one element
  4. 6. a bond between two non-metal atoms
  5. 8. the resulting substance of a reaction
  6. 12. a chemical reaction where the reactants combine to create a brand new product
  7. 14. a bond between a non-metal atom and a metal atom