Unit 5 Vocabulary by Oscar R.

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Across
  1. 4. Equals Mass/volume
  2. 7. Place object in cylinder containing water to see
  3. 8. Same amount of protons and neutrons
  4. 11. Place object on balance to find
  5. 13. electrons in the outermost shell
  6. 14. negative charge
  7. 16. any atom or group of atoms that bears one or more positive or negative electrical charges
  8. 17. shows the atom as a central nucleus containing protons and neutrons with the electrons in circular orbitals
  9. 18. same mass as a proton but without an electric charge
  10. 19. consisting of protons and neutrons at the center of an atom
  11. 20. Vertical Columns on periodic table
Down
  1. 1. The state of the lowest energy for an electron
  2. 2. (%abundance x mass)+ (%abundance x mass)
  3. 3. valence electrons of an atom that uses dots around the symbol of the element
  4. 5. positive charge
  5. 6. ? = L x W x h
  6. 9. Number of Protons in Nucleus
  7. 10. Same number of protons but different mass
  8. 12. horizontal row of the periodic table
  9. 15. Atom is more stable when it has 8 valence electons