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Alhussan Chemistry — Stage 9

Chapter 10: Structure, Bonding, and Properties

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Chapter 11: Patterns in the Periodic Table

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Chapter 12: Chemical Reactions 3 and Rates

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Chapter 13: Planet Earth and Continental Drift

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Quiz

Chemistry 12.5 Extracting copper — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Copper price ($ per tonne). At what value of "Year" is "Price ($/t)" greatest?
Dr Dabour Hub Academy - figure 1
2010
2005
2000
2020
2.
Which is the correct definition of “Copper oxide”?
Black solid from heating copper carbonate.
Removing excess solid from a solution.
Equation using formulae with balanced numbers.
Cannot dissolve more solute.
3.
Copper carbonate loses ____ when heated.
copper
nothing
colour only
mass
4.
Which term matches this definition? “Can be drawn into wires.”
Ductile
Salt
State symbol
Atom
5.
Copper carbonate 6.2 g gave 8.0 g of oxide. Mass of CO2?
8.0 g
6.2 g
−1.8 g
14.2 g
6.
True or false? Carbon oxidises copper oxide.
True
False
7.
Uses of copper (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
8.
Malachite is a ____ ore.
red
green
blue
black
9.
Copper price ($ per tonne). At what value of "Year" is "Price ($/t)" smallest?
Dr Dabour Hub Academy - figure 3
2015
2000
2010
2005
10.
Mass during heating of copper carbonate. Calculate the percentage change in "Mass (g)" from 0 to 5.
Dr Dabour Hub Academy - figure 4
65%
−35%
−55%
35%
11.
Copper price ($ per tonne). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
12.
Copper price ($ per tonne). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
13.
Mass during heating of copper carbonate. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
14.
Which is the correct definition of “Heat exchanger”?
Used to displace copper from solutions.
Device transferring heat, often copper.
Cannot dissolve more solute.
Equation using formulae with balanced numbers.
15.
Which statement is NOT correct?
Copper oxide is green.
The carbon reduces copper oxide.
Iron + copper sulfate → iron sulfate + copper.
Copper carbonate turns from green to black.
16.
Copper oxide is 80% copper. Copper from 25 g of oxide?
25.0 g
20.0 g
5.0 g
31.2 g
17.
Copper price ($ per tonne). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
18.
Copper compounds in solution are often ____.
black
blue
red
yellow
19.
Copper carbonate 12.4 g gave 4.0 g of oxide. Mass of CO2?
16.4 g
4.0 g
12.4 g
8.4 g
20.
True or false? Scrap iron is a cheap way to get copper.
True
False
21.
Copper is used in coins because it does not ____ easily.
conduct
bend
corrode
shine
22.
Which term matches this definition? “Black solid from heating copper carbonate.”
Thermite reaction
Copper oxide
Heat exchanger
Coefficient
23.
Price rose from 1800 to 6200 $/t. Percentage increase?
71%
244%
344%
4400%
24.
Copper displaced by iron over time. At what value of "Time (min)" is "Copper (g)" smallest?
Dr Dabour Hub Academy - figure 9
20
25
0
10
25.
Uses of copper (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
26.
Which term matches this definition? “Removal of oxygen from a compound.”
Reduction
Salt
Subscript
Displacement reaction
27.
Copper is ____.
liquid
soft as sodium
brittle
ductile
28.
What happens when malachite is heated?
It melts to copper
It turns blue
Nothing
Green powder turns black and limewater turns cloudy
29.
Mass during heating of copper carbonate. Between which two values of "Time (min)" did "Mass (g)" change the most?
Dr Dabour Hub Academy - figure 11
2 and 3
0 and 1
4 and 5
3 and 4
30.
True or false? Malachite contains copper carbonate.
True
False
31.
The carbon ____ copper oxide.
oxidises
reduces
neutralises
dissolves
32.
True or false? Copper oxide is black.
True
False
33.
12.4 g of copper carbonate leaves 8.0 g of copper oxide. What mass of carbon dioxide was released?
1.6 g
20.4 g
4.4 g
8.0 g
34.
Uses of copper (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 12
A
B
C
D
35.
Which statement is NOT correct?
Malachite is blue.
Copper is used in coins because it does not corrode easily.
Copper ions in solution can be displaced by iron.
Copper is low in the reactivity series.
36.
Uses of copper (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
37.
True or false? Copper oxide heated with carbon gives pink-brown copper.
True
False
38.
Uses of copper (%). What is the total of all the values?
Dr Dabour Hub Academy - figure 14
53
88
98
78
39.
Uses of copper (%). Which has the greatest value?
Dr Dabour Hub Academy - figure 15
Building
Transport
Electrical
Machinery
40.
Copper is 60% of 100 t used for electrical. Mass?
6000 t
2 t
60 t
40 t
41.
Copper is ____ in the reactivity series.
absent
high
low
top
42.
Which term matches this definition? “Device transferring heat, often copper.”
Ductile
Aqueous displacement
Heat exchanger
Reduction
43.
Which statement is correct?
Copper oxide is green.
Malachite is a green ore.
Copper corrodes quickly.
Copper carbonate gains mass on heating.
44.
Which term matches this definition? “More reactive metal replacing copper.”
Recycling
Copper oxide
Displacement
Excess base
45.
Copper displaced by iron over time. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 16
"Copper (g)" rises to a peak at 20, then falls
"Copper (g)" decreases as "Time (min)" increases
"Copper (g)" increases as "Time (min)" increases
"Copper (g)" stays the same
46.
True or false? Copper ions in solution can be displaced by iron.
True
False
47.
Copper price ($ per tonne). Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 17
"Price ($/t)" decreases as "Year" increases
"Price ($/t)" stays the same
"Price ($/t)" increases as "Year" increases
"Price ($/t)" rises to a peak at 2010, then falls
48.
True or false? Copper is ductile.
True
False
49.
Mass during heating of copper carbonate. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 18
"Mass (g)" decreases as "Time (min)" increases
"Mass (g)" stays the same
"Mass (g)" increases as "Time (min)" increases
"Mass (g)" rises to a peak at 0, then falls
50.
Which is the correct definition of “Ductile”?
Aluminium displacing iron from iron oxide.
Can be drawn into wires.
Liquid that passes through filter paper.
Symbols showing atoms in a substance.
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Part of Chapter 12: Chemical Reactions 3 and Rates — see every lesson and quiz in this unit.
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