The Periodic Table

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Across
  1. 3. this family doesn't react to anything
  2. 4. most reactive family
  3. 6. "Father of the Periodic Table"
  4. 9. have a negative charge; found outside the nucleus
  5. 12. relies solely on valence electrons
  6. 13. a measurement of gravity
  7. 14. how many molecules that occupy a space
  8. 15. how much space something makes up
  9. 19. is the ability of a substance to dissolve in another substance
  10. 20. the basic unit of all matter
Down
  1. 1. measurement of matter
  2. 2. electrons in the outermost shell
  3. 5. composed of 2 or more compounds physically combined
  4. 7. is the property of some materials to attract iron or objects containing iron
  5. 8. a substance made up of 2 or more element chemically combined
  6. 10. pure substance that can't be broken down into something simpler by chemical means
  7. 11. is the ability of a substance to be pulled into a wire
  8. 16. have a positive charge; found in the nucleus
  9. 17. have no charge; found in the nucleus
  10. 18. is the physical form in which a substance exists, such as a solid, liquid, or gas