Unit 2 Vocab

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Across
  1. 2. a variation of an element that possesses the same atomic number but a different mass number
  2. 4. The property of any rotating object given by moment of inertia times angular velocity
  3. 9. the electrons in the outermost shell, or energy level, of an atom
  4. 12. a three dimensional description of the most likely location of an electron around an atom
  5. 14. the total number of protons an nuetrons in an atom
  6. 15. the electrons orbit the nucleus of an atom
  7. 16. the total mass of the particles of matter in an atom
  8. 17. opaque, lustrous elements that are good conductors of heat and electricity
  9. 18. a particle which is smaller than an atom in size
  10. 19. fixed distances from the nucleus of an atom where electrons may be found.
Down
  1. 1. describes the angular momentum of an electron
  2. 3. a chemical element that exhibits some metal and some nonmetal properties
  3. 5. a chemical element
  4. 6. determines the number of orbitals and the orientation of orbitals in a given sub-shell
  5. 7. a column in the periodic table of the chemical elements
  6. 8. a horizontal row of the periodic table
  7. 10. A grouping of electrons in a shell according to the shape of the region of space they occupy
  8. 11. A grouping of electrons in an atom according to energy.
  9. 13. the number of protons in the nucleus of eahc atom of that element