Chemistry

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Across
  1. 5. has a definite shape
  2. 8. the characteristics of an element
  3. 10. the letter that represents an element
  4. 13. the space that a substance takes up
  5. 15. makes up everything
  6. 16. divide mass by volume
Down
  1. 1. takes the shape of its container
  2. 2. has a neutral charge
  3. 3. similar to weight of an atom
  4. 4. has a negative charge
  5. 6. wants to escape
  6. 7. the dense center of an atom
  7. 9. has a positive charge
  8. 11. first designed the periodic table
  9. 12. substance that can not be changed
  10. 14. how much an element weighs