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Course: Alhussan Chemistry — Stage 9
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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 12.9 Rates of reaction — Quiz

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  • Questions count: 50
  • Passing grade: B+
Start Quiz
1.
A flat line means the reaction has ____.
stopped
started
doubled
sped up
2.
Reaction speed of everyday reactions. About how many times bigger is Rusting than Explosion?
Dr Dabour Hub Academy - figure 1
14.0
10.5
7.0
3.5
3.
Mass loss during reaction. What is the value of "Mass lost (g)" when "Time (s)" is 120?
Dr Dabour Hub Academy - figure 2
1.2
2.7
2.0
0.0
4.
Chemists want to ____ rusting.
stop
slow
ignore
speed
5.
True or false? Rate can be in cm³ per second.
True
False
6.
Which statement is NOT correct?
The rate cannot be found from the equation.
A flat line means fastest rate.
Fireworks and explosions are fast reactions.
Readings are taken at regular intervals.
7.
Reaction speed of everyday reactions. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
8.
Gas collected in each 20 s interval. About how many times bigger is 0–20 than 80–100?
Dr Dabour Hub Academy - figure 4
3.8
15.0
7.5
11.2
9.
Fireworks and explosions are ____ reactions.
fast
slow
reversible
stopped
10.
Which term matches this definition? “Apparatus measuring gas volume.”
Gas syringe
Catalytic converter
Neutralisation
Exposed
11.
True or false? Mean rate = amount of product ÷ time.
True
False
12.
True or false? If gas escapes, the flask on a balance gets lighter.
True
False
13.
Which statement is NOT correct?
Explosions are slow.
Rate can be in cm³ per second.
A cotton wool plug lets gas out but stops splashes.
Two reactions with the same final volume used the same amount of reactant.
14.
True or false? You can tell how fast a reaction is from its equation.
True
False
15.
Which is the correct definition of “Slow reaction”?
Takes years, e.g. rusting.
Very fast reaction of fine flammable powder in air.
Removing acidity.
Surface area divided by volume.
16.
Reaction speed of everyday reactions. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
17.
True or false? Rate is fastest at the end.
True
False
18.
True or false? Rate stays constant throughout.
True
False
19.
Reaction speed of everyday reactions. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
20.
Rate can be measured by mass ____.
loss
gain only
volume
colour
21.
Mass loss during reaction. At what value of "Time (s)" is "Mass lost (g)" greatest?
Dr Dabour Hub Academy - figure 7
60
120
30
90
22.
Which statement is correct?
Rate stays constant throughout.
Mean rate = amount of product ÷ time.
Rate is fastest at the end.
A flat line means fastest rate.
23.
True or false? A flat line means fastest rate.
True
False
24.
Rate can be in cm³ per ____.
metre
second
kilogram
degree
25.
Which statement is correct?
The rate cannot be found from the equation.
A flat line means fastest rate.
Rate stays constant throughout.
Explosions are slow.
26.
Which statement is NOT correct?
A cotton wool plug lets gas out but stops splashes.
Fireworks and explosions are fast reactions.
The equation tells you the rate.
Rate can be measured by gas volume over time.
27.
Reaction speed of everyday reactions. What is the total of all the values?
Dr Dabour Hub Academy - figure 8
8
19
22
16
28.
Reaction speed of everyday reactions. Which has the greatest value?
Dr Dabour Hub Academy - figure 9
Fruit ripening
Rusting
Cooking
Explosion
29.
Which term matches this definition? “Takes years, e.g. rusting.”
Refrigeration
Mass loss method
Limewater
Slow reaction
30.
Mass loss during reaction. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
31.
Which is the correct definition of “Rate of reaction”?
How fast reactants are used up or products made.
Removing acidity.
Calcium carbonate pieces used in rate tests.
Surface area divided by volume.
32.
Which statement is NOT correct?
A flat line means the reaction has stopped.
The total volume of gas depends on the amount of reactant.
Fridges speed up decay.
The rate cannot be found from the equation.
33.
30 cm³ in 120 s. Mean rate?
150.00 cm³/s
4.00 cm³/s
0.25 cm³/s
3600.00 cm³/s
34.
Gas collected in each 20 s interval. What is the value for 80–100?
Dr Dabour Hub Academy - figure 11
22
4
30
14
35.
True or false? A steeper line means slower.
True
False
36.
True or false? Explosions are slow.
True
False
37.
Which statement is correct?
A gas syringe measures mass.
Food decay is slowed in a fridge.
The equation tells you the rate.
Rusting is fast.
38.
True or false? A flat line means the reaction has stopped.
True
False
39.
Reaction speed of everyday reactions. Which has the smallest value?
Dr Dabour Hub Academy - figure 12
Fruit ripening
Rusting
Explosion
Cooking
40.
Mass loss during reaction. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
41.
Reaction speed of everyday reactions. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 14
A
B
C
D
42.
30 cm³ in 20 s. Mean rate?
600.00 cm³/s
50.00 cm³/s
1.50 cm³/s
0.67 cm³/s
43.
Rusting is a ____ reaction.
slow
fast
explosive
instant
44.
Which term matches this definition? “Over in seconds, e.g. explosion.”
Fast reaction
Copper sulfate
Marble
Slow reaction
45.
30 cm³ in 60 s. Mean rate?
0.50 cm³/s
1800.00 cm³/s
90.00 cm³/s
2.00 cm³/s
46.
A steeper graph means a ____ rate.
slower
faster
stopped
equal
47.
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 15
100 and 120
20 and 40
40 and 60
0 and 20
48.
Volume rose from 28 to 52 cm³ between 20 s and 40 s. Rate in that interval?
1.2 cm³/s
24.0 cm³/s
2.6 cm³/s
0.6 cm³/s
49.
Which statement is NOT correct?
Cooking an egg is a moderate reaction.
Rusting is fast.
Chemists want to slow rusting.
Rate can be measured by mass loss.
50.
Which statement is correct?
A flat line means fastest rate.
Chemists want to slow rusting.
The equation tells you the rate.
Fridges speed up decay.
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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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