Chemistry crossword :D

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Across
  1. 2. the end result of the chemical reaction
  2. 3. when two or more elements are physically combined
  3. 5. when the equation has an uneven amount of atoms on either side
  4. 6. the building blocks of everything
  5. 8. the building blocks of matter
  6. 9. when the equation has the same amount of atoms on both sides
Down
  1. 1. you cannot destroy or create matter
  2. 2. a chart of all of the elements based on their reactivity
  3. 4. when two or more elements are chemically combined
  4. 7. an element or compound before a chemical reaction