Science Crossword

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Across
  1. 5. an atom with more Neutrons than it would usually have
  2. 7. the ability for 2 substances to react with eachother
  3. 9. 2 or more simple materials combine to make 1 complex compound
  4. 10. sub-atomic particle with a negative charge
  5. 12. a bond between a metal and a nonmetal
  6. 14. sub-atomic particle with a positive charge
  7. 16. a reaction that produces heat, water, and carbon dioxide
  8. 17. elements found on the left side of the periodic table
  9. 18. what is required for any reaction
  10. 19. a change that cannot be undone
Down
  1. 1. 1 complex compound is reduced to 2 or more simpler materials
  2. 2. this equals Mass divided by Volume
  3. 3. a bond between 2 nonmetals
  4. 4. an atom with more Electrons than it would usually have
  5. 6. heat is taken in
  6. 8. sub-atomic particle with a neutral charge
  7. 10. heat is given off
  8. 11. a change that can be undone
  9. 13. what is found at the end of any reaction
  10. 15. elements found on the right side of the periodic table