Unit 2

12345678910111213141516171819
Across
  1. 3. what was Bohr's model called
  2. 4. Who discovered the neutron?
  3. 6. boron and Antimony are examples of?
  4. 7. Thompson's model called?
  5. 8. barium and magnesium are what type of metal?
  6. 10. what contains electrons that are massless, and are negatively charged?
  7. 12. what ion has a positive charge?
  8. 13. what ion gains electrons?
  9. 16. what charge does Electrons have?
  10. 17. What is 80% of the periodic table made of?
  11. 18. the way electrons are arranged in various orbitals.
  12. 19. What is easy to break and are poor conductors?
Down
  1. 1. what radioactive decay emits a new electron?
  2. 2. Dalton's model is called?
  3. 3. what are the horizontal rows called on the periodic table?
  4. 5. what are the vertical columns on the periodic table?
  5. 9. AMU stands for?
  6. 11. who discovered the proton?
  7. 14. what is the name of group 18 or 8A called?
  8. 15. what is the wave's height from zero to crest called?