Unit Two: Atomic Structure

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Across
  1. 4. Has a mass but no charge.
  2. 5. ____ models are like the solar system, showing the electrons in orbits.
  3. 8. Contains the protons and neutrons.
  4. 9. A negatively charged ion
  5. 10. Subatomic particle with a positive charge.
  6. 11. Basic building block of matter
  7. 13. Has no mass, but a negative charge
  8. 14. ________ bonds are formed between two nonmetals sharing electrons
  9. 16. An atom with a positive or negative charge.
Down
  1. 1. _______ electrons are in the outermost orbit.
  2. 2. A positively charged ion
  3. 3. _____ bonds form when a metal transfers its electrons to a nonmetal.
  4. 6. The _________ number shows how many electrons an atom gains or loses when forming a bond. Same as its ionic charge.
  5. 7. Two atoms with the same number of protons but different number of neutrons
  6. 12. This type of bond forms between two metals
  7. 15. _____ dot structures show only the valence electrons