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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 12.12 Surface area and reaction rate — Quiz

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  • Questions count: 152
  • Passing grade: B+
Start Quiz
1.
Why does powder react faster than a lump?
Powder is hotter
Larger surface area gives more frequent collisions
Powder has more mass
Powder particles move faster
2.
Why are flour dust explosions possible?
Flour is cold
Flour is a gas
Very fine powder has a huge surface area
Flour contains metal
3.
Does a larger surface area change the energy of each collision?
Yes, it halves it
No, only the frequency
Yes, it doubles it
It removes energy
4.
Which statement is correct?
Fine flour dust can cause explosions.
Chewing reduces surface area.
Logs burn faster than twigs.
Inner particles react first.
5.
Which statement is correct?
Inner particles react first.
A 2 cm cube has 48 cm² surface.
Flour dust is harmless.
Eight 1 cm cubes have a surface area of 48 cm².
6.
Which statement is correct?
Breaking a lump exposes more particles.
Chewing reduces surface area.
Lumps react faster than powders.
Inner particles react first.
7.
Which statement is correct?
Surface area is the independent variable in this test.
A 2 cm cube has 48 cm² surface.
Logs burn faster than twigs.
Powder gives more total gas from the same mass.
8.
Which statement is correct?
Powder gives more total gas from the same mass.
Lumps react faster than powders.
Only surface particles of a solid can react.
Catalytic converters use solid blocks.
9.
Which statement is correct?
Surface area is the dependent variable.
Flour dust is harmless.
Use the same mass of marble each time.
Cutting a cube reduces surface area.
10.
Which statement is correct?
A 2 cm cube has a surface area of 24 cm².
Flour dust is harmless.
Catalytic converters use solid blocks.
Logs burn faster than twigs.
11.
Which statement is correct?
Catalytic converters use solid blocks.
Cutting a cube reduces surface area.
Inner particles react first.
Powders react faster than lumps.
12.
Which statement is correct?
Smaller particles give a steeper initial gas graph.
Catalytic converters use solid blocks.
Inner particles react first.
Logs burn faster than twigs.
13.
Which statement is NOT correct?
Logs burn faster than twigs.
Breaking a lump exposes more particles.
Chewing food increases its surface area.
Fine flour dust can cause explosions.
14.
Which statement is NOT correct?
Inner particles react first.
Only surface particles of a solid can react.
Use the same mass of marble each time.
Smaller pieces have a larger total surface area.
15.
Which statement is NOT correct?
Catalytic converters use a honeycomb to increase surface area.
Surface area is the independent variable in this test.
Lumps react faster than powders.
More surface area means more collisions per second.
16.
Which statement is NOT correct?
Flour dust is harmless.
More surface area means more collisions per second.
Surface area is the independent variable in this test.
Small pieces of wood burn faster than logs.
17.
Which statement is NOT correct?
Smaller pieces have a larger total surface area.
Chewing reduces surface area.
A 1 cm cube has a surface area of 6 cm².
Coal dust in mines can explode.
18.
Which statement is NOT correct?
Surface area is the independent variable in this test.
A 1 cm cube has a surface area of 6 cm².
Cutting a cube reduces surface area.
Powdered antacids act faster than whole tablets.
19.
Which statement is NOT correct?
More surface area means more collisions per second.
Smaller particles give a steeper initial gas graph.
Surface area is the dependent variable.
Catalytic converters use a honeycomb to increase surface area.
20.
Which statement is NOT correct?
Fine flour dust can cause explosions.
The total volume of gas is the same if the mass of marble is the same.
A 1 cm cube has a surface area of 6 cm².
A 2 cm cube has 48 cm² surface.
21.
Which statement is NOT correct?
Catalytic converters use solid blocks.
Coal dust in mines can explode.
Breaking a lump exposes more particles.
Cutting the cube doubles the surface area.
22.
True or false? Breaking a lump into powder releases more gas in total.
True
False
23.
True or false? Only particles on the surface of a solid can react.
True
False
24.
True or false? Catalytic converters use a honeycomb to increase surface area.
True
False
25.
True or false? Crushed ice melts faster than a block.
True
False
26.
True or false? The total volume of gas is the same if the mass of marble is the same.
True
False
27.
True or false? More surface area means more collisions per second.
True
False
28.
True or false? A 2 cm cube has a surface area of 24 cm².
True
False
29.
True or false? Powders react faster than lumps.
True
False
30.
True or false? Coal dust in mines can explode.
True
False
31.
True or false? Cutting the cube doubles the surface area.
True
False
32.
True or false? Only surface particles of a solid can react.
True
False
33.
True or false? Chewing food increases its surface area.
True
False
34.
True or false? Small pieces of wood burn faster than logs.
True
False
35.
True or false? Eight 1 cm cubes have a surface area of 48 cm².
True
False
36.
True or false? Lumps react faster than powders.
True
False
37.
True or false? Cutting a cube reduces surface area.
True
False
38.
True or false? Inner particles react first.
True
False
39.
True or false? Powder gives more total gas from the same mass.
True
False
40.
True or false? Flour dust is harmless.
True
False
41.
True or false? Logs burn faster than twigs.
True
False
42.
True or false? A 2 cm cube has 48 cm² surface.
True
False
43.
True or false? Surface area is the dependent variable.
True
False
44.
True or false? Chewing reduces surface area.
True
False
45.
True or false? Catalytic converters use solid blocks.
True
False
46.
A 1 cm cube has a surface area to volume ratio of ____ : 1.
6
12
1
3
47.
Only ____ particles of a solid can react.
inner
central
hidden
surface
48.
Breaking a lump exposes more ____.
particles
electrons only
nuclei
neutrons
49.
Smaller pieces have a ____ total surface area.
larger
equal
zero
smaller
50.
A 2 cm cube has a surface area of ____ cm².
24
8
12
48
51.
Eight 1 cm cubes have a surface area of ____ cm².
8
12
48
24
52.
Cutting the cube ____ the surface area.
doubles
triples
halves
keeps
53.
Powders react ____ than lumps.
slower
the same
faster
never
54.
More surface area means more ____ per second.
volume
colour
mass
collisions
55.
Fine flour dust can cause ____.
rust
crystals
freezing
explosions
56.
Coal dust in mines can ____.
vanish
explode
dissolve
freeze
57.
Chewing food increases its ____.
surface area
density
mass
temperature
58.
Small pieces of wood burn ____ than logs.
faster
equally
slower
never
59.
The total volume of gas is the ____ if the mass of marble is the same.
zero
smaller
larger
same
60.
Powdered antacids act ____ than whole tablets.
never
equally
slower
faster
61.
Catalytic converters use a ____ to increase surface area.
honeycomb
single wire
cube
solid block
62.
Surface area is the ____ variable in this test.
control
dependent
random
independent
63.
Use the same ____ of marble each time.
smell
shape
mass
colour
64.
Kindling is used to start fires because of its large ____.
density
mass
colour
surface area
65.
A 1 cm cube has a surface area of ____ cm².
24
8
1
6
66.
Crushed ice melts ____ than a block.
faster
slower
equally
never
67.
Smaller particles give a ____ initial gas graph.
flatter
zero
lower
steeper
68.
Which term matches this definition? “The total area of the outside of a solid that can react.”
Volume
Density
Concentration
Surface area
69.
Which term matches this definition? “Total area of exposed surface of a solid.”
Dust explosion
Marble chips
Disappearing cross
Surface area
70.
Which is the correct definition of “Surface area”?
Total area of exposed surface of a solid.
Rock of calcium carbonate.
Removing acidity.
When the graph line becomes flat.
71.
Which term matches this definition? “Particles must collide with enough energy to react.”
Catalytic converter
Refrigeration
Ore
Collision theory
72.
Which is the correct definition of “Collision theory”?
Takes years, e.g. rusting.
Particles that collide to react.
Particles must collide with enough energy to react.
Rock containing a metal compound.
73.
Which term matches this definition? “Finely divided solid with large surface area.”
Mean rate
Frequency of collisions
Powder
Dilute
74.
Which is the correct definition of “Powder”?
Measure of how hot something is; affects particle speed.
Open to the other reactant.
Balanced equation using formulae.
Finely divided solid with large surface area.
75.
Which term matches this definition? “Large piece with small surface area.”
Temperature
Kinetic energy
Powder
Lump
76.
Which is the correct definition of “Lump”?
Reacts with acid to make a cloudy precipitate.
Large piece with small surface area.
Measures time.
Salt from copper carbonate and sulfuric acid.
77.
Which term matches this definition? “Only these can react with a liquid or gas.”
Surface particles
Salt
Stopwatch
Gradient
78.
Which is the correct definition of “Surface particles”?
Only these can react with a liquid or gas.
Timing until a cross is hidden by precipitate.
Measuring rate by mass of gas escaping.
A 10 °C rise roughly doubles the rate.
79.
Which term matches this definition? “Open to the other reactant.”
Salt
Exposed
Activation energy
Water bath
80.
Which is the correct definition of “Exposed”?
High concentration.
Keeping food cold to slow decay.
Open to the other reactant.
More than needed so all acid reacts.
81.
Which term matches this definition? “Very fast reaction of fine flammable powder in air.”
Dust explosion
Carbonate
Powder
Refrigeration
82.
Which is the correct definition of “Dust explosion”?
Extracting reactive metals using electricity.
Very fast reaction of fine flammable powder in air.
Keeps a reaction at a steady temperature.
Only these can react with a liquid or gas.
83.
Which term matches this definition? “Calcium carbonate pieces used in rate tests.”
Concentrated
Marble chips
Rate
Refrigeration
84.
Which is the correct definition of “Marble chips”?
Finely divided solid with large surface area.
Calcium carbonate pieces used in rate tests.
How fast reactants are used up or products made.
Salt from copper carbonate and sulfuric acid.
85.
Which term matches this definition? “Surface area divided by volume.”
Activation energy
Symbol equation
Surface area to volume ratio
Surface particles
86.
Which is the correct definition of “Surface area to volume ratio”?
Forming crystals from solution.
When the graph line becomes flat.
Keeps a reaction at a steady temperature.
Surface area divided by volume.
87.
Which term matches this definition? “Uses a large surface area of catalyst.”
Catalytic converter
Disappearing cross
Powder
Upturned measuring cylinder
88.
Which is the correct definition of “Catalytic converter”?
Takes years, e.g. rusting.
Uses a large surface area of catalyst.
Only these can react with a liquid or gas.
Rock containing a metal compound.
89.
Gas made by marble lumps and powder in 2 min. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
90.
Surface area of a 2 cm cube cut into smaller cubes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
91.
CO2 from marble of different sizes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
92.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
93.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
94.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
95.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
96.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
97.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
98.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
99.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 11
A
B
C
D
100.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 12
A
B
C
D
101.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
102.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 14
A
B
C
D
103.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 15
A
B
C
D
104.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 16
A
B
C
D
105.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 17
A
B
C
D
106.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 18
A
B
C
D
107.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 19
A
B
C
D
108.
Time for antacid to dissolve. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 20
A
B
C
D
109.
The graph shows CO₂ from marble lumps and powder. Which line is the powder?
Dr Dabour Hub Academy - figure 21
Line A: steeper at the start
Both
Neither
Line B
110.
Gas made by marble lumps and powder in 2 min. What is the value for Small lumps?
Dr Dabour Hub Academy - figure 22
153
80
25
50
111.
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 23
6.4
1.6
3.2
4.8
112.
Gas made by marble lumps and powder in 2 min. What is the total of all the values?
Dr Dabour Hub Academy - figure 24
138
155
172
80
113.
Surface area of a 2 cm cube cut into smaller cubes. What is the value of "Total surface area (cm²)" when "Side length (cm)" is 2?
Dr Dabour Hub Academy - figure 25
48
24
192
96
114.
Surface area of a 2 cm cube cut into smaller cubes. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 26
"Total surface area (cm²)" rises to a peak at 0.25, then falls
"Total surface area (cm²)" increases as "Side length (cm)" increases
"Total surface area (cm²)" stays the same
"Total surface area (cm²)" decreases as "Side length (cm)" increases
115.
Surface area of a 2 cm cube cut into smaller cubes. At what value of "Side length (cm)" is "Total surface area (cm²)" greatest?
Dr Dabour Hub Academy - figure 27
1
0.25
2
0.5
116.
Surface area of a 2 cm cube cut into smaller cubes. At what value of "Side length (cm)" is "Total surface area (cm²)" smallest?
Dr Dabour Hub Academy - figure 28
1
0.5
0.25
2
117.
Surface area of a 2 cm cube cut into smaller cubes. By how much does "Total surface area (cm²)" change between 2 and 0.25?
Dr Dabour Hub Academy - figure 29
210
168
192
216
118.
Surface area of a 2 cm cube cut into smaller cubes. Calculate the percentage change in "Total surface area (cm²)" from 2 to 0.25.
Dr Dabour Hub Academy - figure 30
88%
700%
−700%
800%
119.
CO2 from marble of different sizes. What is the value of "CO2 (cm³)" when "Time (s)" is 90?
Dr Dabour Hub Academy - figure 31
40
0
74
80
120.
CO2 from marble of different sizes. Between which two values of "Time (s)" did "CO2 (cm³)" change the most?
Dr Dabour Hub Academy - figure 32
90 and 120
60 and 90
0 and 30
120 and 150
121.
CO2 from marble of different sizes. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 33
"CO2 (cm³)" stays the same
"CO2 (cm³)" rises to a peak at 150, then falls
"CO2 (cm³)" increases as "Time (s)" increases
"CO2 (cm³)" decreases as "Time (s)" increases
122.
CO2 from marble of different sizes. At what value of "Time (s)" is "CO2 (cm³)" greatest?
Dr Dabour Hub Academy - figure 34
0
150
60
30
123.
CO2 from marble of different sizes. At what value of "Time (s)" is "CO2 (cm³)" smallest?
Dr Dabour Hub Academy - figure 35
0
150
30
90
124.
Time for antacid to dissolve. Which has the greatest value?
Dr Dabour Hub Academy - figure 36
Quartered
Powder
Whole tablet
Halved
125.
Time for antacid to dissolve. Which has the smallest value?
Dr Dabour Hub Academy - figure 37
Whole tablet
Quartered
Halved
Powder
126.
Time for antacid to dissolve. What is the value for Halved?
Dr Dabour Hub Academy - figure 38
145
63
19
106
127.
Time for antacid to dissolve. About how many times bigger is Whole tablet than Powder?
Dr Dabour Hub Academy - figure 39
11.4
3.8
15.3
7.6
128.
Time for antacid to dissolve. What is the total of all the values?
Dr Dabour Hub Academy - figure 40
299
333
367
145
129.
A cube has 2 cm sides. What is its surface area? (6 × s²)
24 cm²
4 cm²
12 cm²
8 cm²
130.
A 2 cm cube (24 cm²) is cut into eight 1 cm cubes. What is the total surface area?
96
12
48 cm²
24
131.
Surface area of a cube with side 1 cm?
1 cm²
4 cm²
6 cm²
60 cm²
132.
Surface area of a cube with side 3 cm?
9 cm²
54 cm²
36 cm²
27 cm²
133.
Surface area of a cube with side 5 cm?
150 cm²
25 cm²
125 cm²
100 cm²
134.
Surface area of a cube with side 4 cm?
16 cm²
64 cm²
96 cm²
960 cm²
135.
Surface area of a cube with side 2 cm?
4 cm²
24 cm²
8 cm²
16 cm²
136.
A 2 cm cube is cut into 1 cm cubes. New total surface area?
8 cm²
12 cm²
24 cm²
48 cm²
137.
A 3 cm cube is cut into 1 cm cubes. New total surface area?
54 cm²
162 cm²
18 cm²
27 cm²
138.
A 4 cm cube is cut into 1 cm cubes. New total surface area?
384 cm²
96 cm²
24 cm²
64 cm²
139.
Surface area to volume ratio of a 2 cm cube?
3.0
12.0
0.3
4.0
140.
Surface area to volume ratio of a 5 cm cube?
0.8
30.0
25.0
1.2
141.
Surface area to volume ratio of a 4 cm cube?
1.5
16.0
0.7
24.0
142.
Surface area to volume ratio of a 1 cm cube?
0.6
60.0
0.2
6.0
143.
Surface area to volume ratio of a 3 cm cube?
9.0
0.5
2.0
18.0
144.
Surface area to volume ratio of a 6 cm cube?
36.0
1.0
0.1
10.0
145.
Lumps gave 25 cm³ and powder 75 cm³ in 2 min. Percentage more for powder?
300%
200%
67%
50%
146.
Lumps gave 30 cm³ and powder 80 cm³ in 2 min. Percentage more for powder?
50%
267%
62%
167%
147.
Lumps gave 30 cm³ and powder 75 cm³ in 2 min. Percentage more for powder?
150%
45%
60%
250%
148.
Lumps gave 25 cm³ and powder 80 cm³ in 2 min. Percentage more for powder?
69%
320%
55%
220%
149.
Tablet 100 s, powder 20 s. How many times faster?
0.2 times
5.0 times
120.0 times
80.0 times
150.
Tablet 120 s, powder 15 s. How many times faster?
8.0 times
135.0 times
0.1 times
105.0 times
151.
Tablet 100 s, powder 15 s. How many times faster?
0.1 times
115.0 times
85.0 times
6.7 times
152.
Tablet 120 s, powder 20 s. How many times faster?
6.0 times
0.2 times
140.0 times
100.0 times
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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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