Atoms Crossword Puzzle by: Bryson Jones

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Across
  1. 4. mass the mass of an atom of a chemical element
  2. 5. the smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms
  3. 6. shows energy levels of atoms
  4. 11. the system of electrons surrounding the nucleus of an atom
  5. 12. table a row is called a period on the
  6. 14. the basic unit of a chemical element.
  7. 15. protons and neutron make up the
Down
  1. 1. has negative energy
  2. 2. chemical substance composed of many identical molecules
  3. 3. water
  4. 7. hard state of matter
  5. 8. has 0 energy
  6. 9. made the periodic table
  7. 10. number tells you with the element is
  8. 12. has positive energy
  9. 13. what is oxygen