Chemistry Vocab

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Across
  1. 2. In a atom and has a negative charge
  2. 4. Verticle columns in the periodic table
  3. 5. Horozontal row in the periodic table
  4. 9. Protons and nutrons inside
  5. 11. # of protons and electrons in a element
  6. 12. Same mass as a proton
  7. 15. New substance formed
  8. 16. Table of elements ordered by atomic #
  9. 18. Change in size,shape,or state of matter
  10. 19. Tells # of molecules
Down
  1. 1. Mix of metal and non-metal
  2. 3. Outer layer of electrons
  3. 6. Goupe of electrons circling the nucleus
  4. 7. Atom with a positive charge
  5. 8. Shows the # of atoms
  6. 10. Brittle,dull,insulator
  7. 13. Majority of the periodic table
  8. 14. Levles of electrons
  9. 17. New substance and properties