5 Written Questions

1. Oxygen
2. Oxidation number
3. zero
4. Benedict's reagent (Cu2+)
5. H+ ions and H2O

5 Matching Questions

1. When does oxygen usually have a -2 charge?
2. How do you determine the volume of a solid?
3. What is the menisus?
4. a solid compound fromed from double displacement or double replacement reactions
5. What is the unit used to express the density of a solid?

1. a Precipitate
2. b when combined with other elements
3. c the curved liquid surface on a graduated cylinder
4. d place solid into the liquid of a partially filled graduated cylinder until it is completely submerged
5. e g/cm3

5 Multiple Choice Questions

1. Density
   1. What is the second electronegative element?
   2. Reactions that releases heat to their surroundings
   3. What is the most electronegative element?
   4. The ration of the mass of a substance to its volume (D=m/v)
2. Fluorine
   1. What electronegative element, combined with any other element has an oxidation number of -1
   2. What compound have the oxidation number of +3?
   3. What is the oxidation number of free elements? Ex. Ne, Br2, S8
   4. When combined with nonmetals, what is the oxidation number of Hydrogen?
3. g/mL
   1. What is the unit used to express the density of a solid?
   2. What is the most electronegative element?
   3. What is the second electronegative element?
   4. What is the unit used to express the density of a liquid?
4. Metals
   1. Are metals or nonmetals LESS electornegative?
   2. Electron Transfer reactions
   3. What is the second electronegative element?
   4. What is the most electronegative element?
5. peroxides and superoxides
   1. What is the oxidation number of hydrogen when combined with metals?
   2. What is the unit used to express the density of a solid?
   3. What compound have the oxidation number of +3?
   4. What are the exceptions for oxygens oxidation number not to be -2 but -1?

5 True/False Questions

1. What is the oxidation number of Gp VIIA elements in compound unless combined with a more negative element? → zero

   True        False

2. oxidized → Reactant gains electrons (becomes more negative)

   True        False

3. ions from two different compounds change places to form two new compounds. → Aluminum and gallium

   True        False

4. uncombined form of one element displaces (and replaces) another element in a compound, forming a new compound → Single Displacement or Single Replacement Reactions Ex. A+BC=AC+B

   True        False

5. the tendency of an atom in a bond to attract shared electrons → Oxidation-Reduction or Redox Reaction

   True        False