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5 Written questions

5 Matching questions

  1. The following changes indicate what? Lose of electrons, compound increases in oxygen content, or compound decreases in hydrogen?
  2. What is the second electronegative element?
  3. a solid compound fromed from double displacement or double replacement reactions
  4. The following changes indicate what? Gain electrons, compound decreases in oxygen, or compound increases in hydrogen
  5. What is the oxidation number of free elements? Ex. Ne, Br2, S8
  1. a reactants are oxidized
  2. b reactants are reduced
  3. c zero
  4. d Oxygen
  5. e Precipitate

5 Multiple choice questions

  1. Density
  2. Aluminum and gallium
  3. when two substances, usually in their elemental forms, combine to form a compound.
  4. extensive properties
  5. One reactant loses electrons (becomes more positive))

5 True/False questions

  1. uncombined form of one element displaces (and replaces) another element in a compound, forming a new compoundDouble Displacement or Double Replacement Reaction Ex. AB+CD=AD+CB


  2. What is the unit used to express the density of a liquid?g/mL


  3. In order to balance the net charge of an acid, what should be adde to the equation?H+ ions and H2O


  4. the tendency of an atom in a bond to attract shared electronselectronegativity


  5. When does oxygen usually have a -2 charge?when combined with other elements


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