Chemistry Review Crossword

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Across
  1. 6. occurs when a compound is broken into two simpler products
  2. 8. Neutrons + Protons
  3. 10. metals that are found in group 2
  4. 14. _____ bonds share electrons
  5. 16. gasses found in group 18
  6. 17. ____ bonds transfer electrons
  7. 19. same element with more or less neutrons
Down
  1. 1. This radiation can only be stopped by large amounts of concrete or lead
  2. 2. a chemical change in which an element reacts with oxygen and produces Co2 and H2O
  3. 3. this subatomic particle has a positive charge
  4. 4. this subatomic particle has a negative charge
  5. 5. vertical columns on the periodic table
  6. 7. have a proton to neutron ratio over 3:2
  7. 9. ____ are a positively charged ion
  8. 10. metals found in group 3
  9. 11. organic compounds must include _____
  10. 12. ____ are a negatively charged ion
  11. 13. horizontal rows on the periodic table
  12. 15. ____ is released from alpha radiation
  13. 18. a subatomic particle with a positive or negative charge