Unit 8 Crossword

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Across
  1. 2. All ________, except Ca+2, Sr+2, Ba+2, Hg2+2, and Pb+2, are soluble.
  2. 4. Illustrates a chemical reaction using symbols and chemical formulas or elements.
  3. 6. _______ of a chemical reaction include the formation of a gas or a precipitate, a change in energy, or a change in color.
  4. 10. AB + O2 → CO2 + H2O
  5. 12. All ________, except those of group 1 and NH4+, are insoluble.
  6. 13. All ________, except Ag+ and Pb+2, are soluble.
  7. 14. _______Displacement AB + CD → AD + CB
  8. 15. AB → A + B
  9. 17. A + B → AB
  10. 19. All _________ are soluble
  11. 20. The small number found after a chemical symbol or ion. This shows the specific number of atoms in a molecule or compound.
  12. 22. Starting materials
  13. 23. Displacement will not occur and result in no reaction if C is more _______ than A (single displacement).
Down
  1. 1. Most nonmetals are a ________
  2. 3. _______ displacement A + BC → AC + B
  3. 5. A compound dissolved in water is known as ______
  4. 7. _______ separates when ionic compounds are dissolved in water
  5. 8. Most metals are a ________
  6. 9. Ending materials
  7. 11. Chemical equations must be ________ because matter can not be created or destroyed during a reaction.
  8. 12. The number found before a chemical formula or element to show how many atoms or molecules are involved in a chemical reaction.
  9. 13. Carbon and hydrogen bonded together is a __________
  10. 16. Only bromine and mercury are a _______
  11. 18. BrINClHOF
  12. 21. 3 elements in a compound is a ________