9. Active metals are more reactive than less active metals. Due to this, more active metals are more likely to combine and form compounds with other elements.
10. Silver would have been the easiest to process because of its lack of reactivity.
11. Since most metals are more reactive than metals like silver, gold, and platinum, things are easily reactive and pick up other minerals aswell.
12. a. A reaction between calcium metal with chromium chloride would more likely occur. Calcium metal is more reactive than chromium metal.
13. b. Because zinc is much more reactive than silver,by putting zinc into a silver solution, it would cause a reaction.
14. a. Since iron is more reactive than lead, stirring a solution of lead nitrate with an iron spoon would cause it to dissolve
b. Pb2+(aq) + Fe(s) -> Pb(s) + Fe2+(aq)
15.Oxidation is the loss of one or more electrons that causes a metal to become a cation. Reduction is the gain of one or more electrons that causes a cation to balance its electrical charge.
16.a. Au3+ + 3e- --> Au
b. V --> V4+ + 4e-
c. Cu+ --> Cu2+ + 1e-
17. a. reduction.
b. oxidation.
c. reduction.
18.a. Zn2+ has been oxidized. Zn loses two electrons.
b. Ni has been reduced. Ni^2+ gains two electrons.
c. The reducing agent in this reaction is Zn.
19.a. K^+ has been oxidized. K loses an electron.
b. Hg has been reduced. Hg^2+ gains two electrons.
c. The oxidizing agent in this reaction is Hg^2+.
20.a.?
b.?
21. a. Electrometallurgy is the use of an electrical current to supply electrons to metal ions, this reducing them.
b. Pyrometallurgy is the treatment of metals and their ores with heat, as in a blast furnace.
c. Hydrometallurgy is the treatment of ores and other metal-containing materials with reactants in water solution.
22. a. Electrometallurgy.
b. Pyrometallurgy.
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