Chemistry Crossword!!!!

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Across
  1. 2. the w in whmis
  2. 7. molecular compounds have a ____ boling point
  3. 9. physical properties that can be observed but not measured
  4. 11. negatively charged ionic compound
  5. 12. sodium chloride
  6. 13. creator of the planetary model
  7. 15. a vertical column of elements
  8. 16. number of protons + number of neutrons
  9. 17. amount of matter per unit volume
  10. 19. protons are ________ charged atoms
  11. 20. an element with a full valence shell is _______
  12. 21. the measure of attraction between different materials
  13. 22. Element with the symbol Li
  14. 24. what happens to the electrons in metal elements
  15. 25. metals are on this side of the periodic table
  16. 26. not stable
  17. 28. type of compound with high melting and boiling point
  18. 29. mechanical mixture synonym
  19. 30. attractive forces between particles in this state are very strong
  20. 31. ability of a substance to react with oxygen
  21. 32. has properties of both metal and non-metal
Down
  1. 1. correlation does not equal _________
  2. 3. the border of the hhps symbol is a triangle meaning the __________ is dangerous
  3. 4. positively charged ion
  4. 5. negatively charged particles
  5. 6. most reactive non-metal
  6. 8. graduated ___________
  7. 10. diagram to represent the atomic structure of an element
  8. 14. an atom of the same element that has a different number of neutrons
  9. 16. non-metal and non-metal bond together to form
  10. 18. outermost shell
  11. 20. the ability of a substance to dissolve in a solvent such as water
  12. 23. type of statement to use in a hypothesis an educated guess
  13. 27. atomic radius ________ from right to left
  14. 30. in a period, all elements have a similar number of _____