Key Words on Chemistry

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Across
  1. 2. a pure and simple substance that is made up of only one type of atom
  2. 3. a substance made up of more than one atom
  3. 5. chemicals that are used to show the pH of a solution
  4. 8. not a metal, mainly gases
  5. 10. can be dissolved
  6. 12. has a negative charge (is in an atom)
  7. 13. Gases least reactive gases, Group VIII
  8. 15. cannot be dissolved
  9. 16. has a pH of less than 7
  10. 17. vertical rows on a periodic table
  11. 18. man-made
  12. 22. has a positive charge (is in an atom)
Down
  1. 1. how reactive the element is
  2. 4. solids formed from a solution
  3. 6. the layers inside an atom containing electrons
  4. 7. takes up 80% of the periodic table
  5. 8. neutral and has no electrical charge (is in an atom)
  6. 9. a mix between metal and non-metal
  7. 11. has a pH of more than 7
  8. 14. horizontal rows on a periodic table
  9. 19. a pure and simple substance that is made up of more than one type of atom
  10. 20. Mass Unit the unit of measurement for the mass of atoms
  11. 21. small particle containing protons, neutrons and electrons