Chemistry Revision

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Across
  1. 3. negatively charged ion
  2. 9. Protons and neutrons added together
  3. 13. an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons
  4. 14. group 1 on the periodic table
  5. 15. positively charged subatomic particle
Down
  1. 1. positively charged ion
  2. 2. electrons in the outer shell
  3. 4. Negatively charged subatomic particle
  4. 5. group 18 on the periodic table
  5. 6. group 2 on the periodic table
  6. 7. columns on the periodic table
  7. 8. group 17 on the periodic table
  8. 10. elements that lose electrons easily, are lustrous, malleable, and are good conductors of heat and electricity
  9. 11. a chemical bond that involves the sharing of electrons to form electron pairs between atoms
  10. 12. rows on the periodic table