Chemistry Midterm

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Across
  1. 3. A change that looks different but is the same substance.
  2. 6. Counting sig figs without decimals
  3. 7. Counting sig figs with decimals
  4. 8. Breaks down into a proton that remains in the nucleus and the electron that is released.
  5. 10. Discovered atoms
  6. 11. equal to the atomic number
  7. 13. Does not affect the atomic number of mass number of an atom.
  8. 14. - unequal sharing of electrons due to a large difference in electron negativities
Down
  1. 1. A change in which something new is formed.
  2. 2. The group number determines the _____.
  3. 4. Metal
  4. 5. Nonmetal + Nonmetal
  5. 9. Constists of helium neclei that have been emitted from a radioactive source.
  6. 12. - Metal + Nonmetal