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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 12.13 Chapter 12 Review: Chemical Reactions 3 and Rates — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Malachite contains copper ____.
sulfate
chloride
carbonate
oxide
2.
True or false? Metals below carbon are extracted by heating with carbon.
True
False
3.
Time for a reaction at different temperatures. By how much does "Time (s)" change between 20 and 60?
Dr Dabour Hub Academy - figure 1
188
150
170
10
4.
Which term matches this definition? “More reactive metal replaces a less reactive one.”
Effervescence
Displacement
Copper sulfate
Rate of reaction
5.
True or false? Every collision causes reaction.
True
False
6.
Which statement is correct?
Zinc + copper sulfate gives zinc sulfate and copper.
Dilute acid reacts faster.
Lead displaces iron.
Aluminium is extracted with carbon.
7.
True or false? Copper displaces zinc.
True
False
8.
Gas volume with acid of different concentrations. Between which two values of "Time (s)" did "CO2 (cm³)" change the most?
Dr Dabour Hub Academy - figure 2
60 and 80
0 and 20
20 and 40
40 and 60
9.
True or false? Excess solid is removed by filtration.
True
False
10.
Which term matches this definition? “Particles must collide with enough energy to react.”
Salt
Temperature
Concentrated
Collision theory
11.
A steeper graph shows a ____ rate.
equal
stopped
slower
faster
12.
Temperature rise when metals are added to copper sulfate. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
13.
Gas made by marble lumps and powder in 2 min. About how many times bigger is Powder than Large lumps?
Dr Dabour Hub Academy - figure 4
6.4
3.2
4.8
1.6
14.
Temperature rise when metals are added to copper sulfate. What is the total of all the values?
Dr Dabour Hub Academy - figure 5
48
54
30
42
15.
Time 120 s at 20 °C; rate doubles per 10 °C. Time at 30 °C?
120 s
30 s
60 s
240 s
16.
Surface area of a cube of side 4 cm?
960 cm²
96 cm²
16 cm²
64 cm²
17.
Gas volume with acid of different concentrations. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 6
"CO2 (cm³)" decreases as "Time (s)" increases
"CO2 (cm³)" stays the same
"CO2 (cm³)" rises to a peak at 120, then falls
"CO2 (cm³)" increases as "Time (s)" increases
18.
Which term matches this definition? “Removing oxygen.”
Water bath
Excess carbonate
Reduction
Rate of reaction
19.
Time for a reaction at different temperatures. At what value of "Temperature (°C)" is "Time (s)" greatest?
Dr Dabour Hub Academy - figure 7
50
20
60
40
20.
Which term matches this definition? “Speeds up a reaction without being used up.”
Catalyst
Slow reaction
Rate
Surface area to volume ratio
21.
Which is the correct definition of “Collision theory”?
Measuring rate by mass of gas escaping.
Speed of reaction.
Large piece with small surface area.
Particles must collide with enough energy to react.
22.
Which statement is correct?
Metal oxide + acid gives hydrogen.
Every collision causes reaction.
Aluminium is extracted with carbon.
Metal oxide + acid → salt + water.
23.
True or false? Lead does not react with iron oxide because lead is less reactive.
True
False
24.
Time for a reaction at different temperatures. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
25.
Expected 6.0 g; got 4.0 g. Percentage yield?
67%
150%
667%
2%
26.
A 10 °C rise roughly ____ the rate.
stops
halves
triples
doubles
27.
Which statement is NOT correct?
Particles must collide with enough energy.
Mass is conserved in reactions.
Thermite produces molten iron.
Metal oxide + acid gives hydrogen.
28.
60 cm³ in 20 s. Mean rate?
0.33 cm³/s
1200.00 cm³/s
3.00 cm³/s
80.00 cm³/s
29.
Gas made by marble lumps and powder in 2 min. What is the total of all the values?
Dr Dabour Hub Academy - figure 9
80
155
138
172
30.
Gas volume with acid of different concentrations. What is the value of "CO2 (cm³)" when "Time (s)" is 20?
Dr Dabour Hub Academy - figure 10
30
74
52
78
31.
True or false? Higher concentration gives a faster rate.
True
False
32.
Zinc chloride crystals are corrosive, so you should:
Heat them directly
Taste them
Touch them
Wear eye protection
33.
Which term matches this definition? “Forming crystals from solution.”
Crystallisation
Catalytic converter
Activation energy
Neutralisation
34.
Which term matches this definition? “How fast reactants are used up or products made.”
Slow reaction
Carbonate
Rate of reaction
Concentration
35.
True or false? Aluminium is extracted with carbon.
True
False
36.
Which statement is NOT correct?
Particles must collide with enough energy.
A steeper graph shows a faster rate.
Metals below carbon are extracted by heating with carbon.
Dilute acid reacts faster.
37.
Metals below carbon are extracted by heating with ____.
electricity
gold
carbon
water
38.
Which is the correct definition of “Surface area”?
Timing until a cross is hidden by precipitate.
Total area of exposed surface of a solid.
Forming crystals from solution.
Collision that leads to reaction.
39.
Excess solid is removed by ____.
filtration
magnets
evaporation
condensing
40.
True or false? A 10 °C rise roughly doubles the rate.
True
False
41.
Which term matches this definition? “Rock containing a metal compound.”
Sodium thiosulfate
Crystallisation
Marble
Ore
42.
Which statement is correct?
Higher concentration gives a faster rate.
Copper displaces zinc.
Lead displaces iron.
Balance by changing subscripts.
43.
Surface area of a cube of side 3 cm?
27 cm²
36 cm²
9 cm²
54 cm²
44.
Which term matches this definition? “Minimum energy needed for a reaction.”
Dilute
Upturned measuring cylinder
Activation energy
Fast reaction
45.
80 cm³ in 40 s. Mean rate?
120.00 cm³/s
3200.00 cm³/s
2.00 cm³/s
0.50 cm³/s
46.
Which statement is NOT correct?
Higher temperature gives a faster rate.
Larger surface area gives a faster rate.
A catalyst speeds up a reaction.
Balance by changing subscripts.
47.
Higher temperature gives a ____ rate.
zero
faster
slower
equal
48.
80 cm³ in 20 s. Mean rate?
1600.00 cm³/s
0.25 cm³/s
100.00 cm³/s
4.00 cm³/s
49.
Gas volume with acid of different concentrations. At what value of "Time (s)" is "CO2 (cm³)" smallest?
Dr Dabour Hub Academy - figure 11
40
0
100
80
50.
True or false? A steeper graph shows a faster rate.
True
False
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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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