Chem Review 4/24

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Across
  1. 4. Found on the periodic table. The mass of 1 mole of a substance.
  2. 7. A chemical substance that is present at the start of a chemical reaction
  3. 9. C2H3O2 -1
  4. 11. Comes from the coefficients of a balanced chemical equation. The ratio in which two substances will react in a chemical reaction.
  5. 13. SO4 -2
  6. 20. (s)
  7. 22. NO3 -1
  8. 23. A substance reacts with oxygen
  9. 25. A _______ change in a chemical that does NOT involve a change in the identity of the chemical
Down
  1. 1. PO4 -3
  2. 2. (g)
  3. 3. AB + CD --> AD + CB
  4. 5. A + BC --> B + AC
  5. 6. OH -1
  6. 8. Equal to 6.022 x 10 ^ 23 things
  7. 10. Law of _____ of mass. Matter is neither created nor destroyed in a chemical reaction
  8. 12. (aq)
  9. 14. NH4 +1
  10. 15. a chemical substance that forms in a chemical reaction
  11. 16. A+B-->AB
  12. 17. A______ change that changes one set of chemicals into another set of chemicals (aka a chemical reaction)
  13. 18. CO3 -2
  14. 19. AB--->A+B
  15. 21. (l)
  16. 24. Measured in grams (g). A measure of the amount of matter in an object.