Chemistry Puzzle

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Across
  1. 4. another word for atomic mass
  2. 7. a chemical bond of only one type of element
  3. 9. the smallest unit of mass
  4. 10. a unit of atoms, compounds, elements or other pieces of matter
  5. 11. a reaction that produces CO2 and H2O
  6. 12. a reaction where atoms switch places
Down
  1. 1. a reaction where atoms fall away from one another
  2. 2. a reaction where atoms bind together
  3. 3. a row in the periodic table
  4. 5. notation that tells you how many of an element or compound there is
  5. 6. a chemical bond of multiple types of atoms
  6. 8. a chemical bond of multiple atoms (can be the same)