Chemistry So Far

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Across
  1. 2. A solution with a pH of 7
  2. 5. A reaction that absorbs energy from its surroundings
  3. 8. This type of combustion reaction produces carbon monoxide
  4. 10. This type of reaction is the breakdown of a metal by oxygen
  5. 12. Paint stripper, oven cleaner, and cement are an example of this (2 words)
  6. 13. Releases OH- ions in water
  7. 14. Number of protons in an atom (2 words)
  8. 15. Releases H+ ions in water
  9. 16. Respiration is this type of reaction
  10. 19. A product of a neutralisation reaction
  11. 21. 4NH3 + __O2 → 4NO + 6H2O
  12. 22. ______ Electrons: Electrons in an atom's outermost shell
Down
  1. 1. Negatively charged particle
  2. 3. Bond between two oppositely charged ions
  3. 4. The pH of lemon juice
  4. 6. An unstable isotope of an element
  5. 7. Atoms of an element with different numbers of neutrons
  6. 9. Used to measure pH
  7. 11. The substances you start with in a chemical reaction
  8. 17. _____ Gas: Combustion requires this
  9. 18. The name for an ion of Chlorine
  10. 20. ______ Decay: A type of nuclear reaction emitting a particle from the nucleus