Chemistry

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Across
  1. 3. a counting number that equals 6.022 x 1023 particles
  2. 6. group 18 elements
  3. 9. the energy of movement
  4. 11. a negatively charged subatomic particle found surrounding the nucleus of an atom
  5. 12. horizontal rows on the periodic table
  6. 13. the smallest unit of matter
  7. 14. a force that holds atoms together
  8. 16. the amount of matter in an object
  9. 17. a positively charged subatomic particle found in the nucleus of an atom
Down
  1. 1. the amount of space an object takes up
  2. 2. group 17 elements
  3. 4. a chemically inactive substance
  4. 5. anything that takes up space and has mass
  5. 7. an atom with a net charge
  6. 8. a positively charged subatomic particle found in the nucleus of an atom
  7. 10. atoms of the same element with different masses
  8. 12. the force exerted per unit area on a surface
  9. 15. vertical columns on the periodic table