Atoms Matter

1234567891011
Across
  1. 1. particle that determines type of atom
  2. 3. charge of each proton
  3. 7. electron _____ describes shape of electron orbitals
  4. 8. charge of atom in lowest energy state (electrons = protons)
  5. 9. central part of atom containing protons
  6. 10. neutrons + ________ = atomic mass
  7. 11. atom particle with negative charge
Down
  1. 2. atomic ——— orders all the elements in the periodic table
  2. 4. atoms with equal protons and different neutrons
  3. 5. first element with 1 proton & 1 electron (symbol H)
  4. 6. central and dense part of atom
  5. 7. sixth element with 6-protons & 6-neutrons & 6-electrons (symbol C)
  6. 8. atom particle with neutral charge