Unit 2 chem

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Across
  1. 1. These make up 80% of the periodic table
  2. 4. The number of wave cycles that pass a given point per unit of time
  3. 6. Vertical column on periodic table
  4. 10. The way electrons are arranged in various orbitals around the nucleus of an atom
  5. 12. The smallest particle of an element
  6. 15. A wave's height from zero to crest
  7. 17. The total number of protons and neutrons in the nucleus of an atom
  8. 18. What represents the fixed energies of an electron
  9. 19. Horizontal row on the periodic table
  10. 20. Atoms that have the same number of protons but a different number of neutrons
Down
  1. 2. The mnemonic for atomic number and mass number
  2. 3. The attractive force that holds the nucleus together
  3. 5. These are ions that loose electrons
  4. 7. These have properties of both metals and nonmetals
  5. 8. Electrically neutral means an overall charge of what?
  6. 9. True or false, Atomic mass and mass number are the same thing
  7. 11. What regions of the atom contains Protons and Neutrons
  8. 13. distance between crests
  9. 14. This scientist propsed and created the Bowling ball model
  10. 16. This prinicple explains that every orbital in a sublevel is doubly occupied