Bonds and Reactions

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Across
  1. 4. Substance made of two or more different elements
  2. 6. Reaction where a single compound breaks into simpler substances
  3. 8. Reaction of a fuel with oxygen producing CO₂ and H₂O
  4. 9. Two or more atoms chemically bonded
  5. 11. Bond formed when electrons are transferred between atoms
  6. 14. Required for or released during chemical changes
  7. 16. Starting substance in a chemical reaction
  8. 17. Positively charged ion
  9. 18. Reaction where two or more substances combine to form one product
  10. 20. Charged atoms formed by gaining or losing electrons
Down
  1. 1. Negatively charged particle involved in bonding
  2. 2. Negatively charged ion
  3. 3. Force holding atoms together
  4. 5. Replacement Reaction where two compounds exchange ions
  5. 7. Reaction that releases heat
  6. 10. Replacement Reaction where one element replaces another in a compound
  7. 12. Bond formed by sharing electrons
  8. 13. Bond involving a sea of mobile electrons in metals
  9. 15. Substance formed in a reaction
  10. 19. Reaction that absorbs heat