Download Unit 2 Section B Supplement b

Period:
Student ID Number:
Name:
Date:
Unit 2
Section B Supplement
In which layer of the earth are the following resources found:
a. Water?
1.
Minerals?
b.
2.
Name three properties of copper that make it such a widely used metal in modern society.
3.
Identify three questions that should be answered prior to mining a metallic ore at a given location.
4.
To investigate the relative reactivity of metals X, Y, and Z, a student systematically combined each
metal with cation solutions of the other two metals, as shown in the following table. The following
reaction not performed).
abbreviations indicate what was observed (MR—no reaction, R—reaction,
----
Solutions
2
)
3
X(N0
Metals
X
Y
)
2
)
3
Y(N0
2
)
3
Z(N0
NR
R
R
—
Z
R
—
NR
NR
a.
Arrange the metals X, Y, and Z from most reactive to least reactive.
b.
Wly were some reactions not performed?
—
Which metal is most likely to be found in an uncombined, or “free” metallic state? Explain.
d.
5.
Which metal is least likely to be found chemically uncombined? Explain. Same as question c?
Why are processes such as electrometallurgy, hydrometallurgy, or pyrometallurgy necessary for
obtaining some metals?
)
b:
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6.
Period:
Why is the reactivity of a metal an important consideration when
a selecting a coinage metal
7
.
b
7.
mining a coinage taI’
Defmrediiton
and
(
F
oxiaatian in terms of e1etron transfer.
F
4
F
8.
Based on this metallic activity series:
Mg,
Most Reactive
answer the following questions (NOTE:
a.
Zn, Cu, Au
Least Reactive
The charge on common ions of Mg, Cu, Au,
and Zn is 2+.)
Which one of the following reactions is more
likely to occur? Explain
2
Cu
(aq)
+
Au(s)
4u
(
2
aq)
+
Cu (s)
—
—*
2 (aq)
Au
+
Cu(s)
Au(s)+ 2
Cu
(
aq)
f
b.
F
Anãgnitihi strip is placed in an aqueous solution of copper (II) nitrate, 3
Cu(N0 What do you
.
2
)
expect to observe? Explain.
I
c.
—
Write a chemical equation to support your answer
in
I
part c.
(
d
9.
In part
c, is
the
magnesium
the
Ag+e—*Ag
identify each of
a.
metal oxidized,
reduced, or neither
7
Explain your
answer
following equations as representing either
an oxidation or a reduction reaction:
b.
L( çl
2
—+
Mg +
2e
Mg 4,
c.
Cr+3e—Cr
F
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Name:
Date:
Student ID Number:
Period:
10. Consider the following equation:
Li(s)
+
Pb
(
2
aq)
a.
Which reactant has been oxidized? Explain.
b.
Which reactant has been reduced? Explain
c.
Identify the reducing agent.
—+
Li(aq)
+
Pb(s)
I
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)
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