Balanced Equations Crossword

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Across
  1. 2. each unique atom in an equation
  2. 4. A _ equation has an equal mass on each side
  3. 6. a group of atoms chemically bonded together
  4. 7. the result of a chemical reaction
  5. 9. number denoting the amount of a single element
  6. 10. any change in the arrangement of atoms
Down
  1. 1. the input of a chemical equation
  2. 3. number denoting the number of a molecule
  3. 5. substance made of two or more elements in a fixed proportion
  4. 8. Law of _ of Mass