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Course: Alhussan Chemistry — Stage 7
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Alhussan Chemistry — Stage 7

Chapter 1: The Particle Model and States of Matter

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Chapter 2: Elements, Compounds and Mixtures

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Chapter 3: Metals and Non-Metals

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Chapter 4: Chemical Reactions 1

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Chapter 5: Acids and Alkalis

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Chapter 6: The Earth and Plate Tectonics

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Quiz

Chemistry 1.5 Investigating boiling points — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Cooking time of eggs at different altitudes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
2.
Which statement is correct?
Pressure cookers lower the boiling point.
Internet data is primary data.
Air pressure is lower at high altitude.
Air pressure is higher on mountains.
3.
Cooking time of eggs at different altitudes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
4.
Boiling point falls about 1 °C per 300 m. What is it at 3000 m?
10°C
−2900°C
110°C
90°C
5.
Eggs take 12 min at sea level and 13 min at altitude. Percentage increase?
1%
8%
83%
108%
6.
Which term matches this definition? “A result that does not fit the pattern.”
Scale
Melting point
Substance
Anomalous result
7.
Water boiled at 93 °C at altitude. By what percentage is that lower than 100 °C?
8%
7%
70%
93%
8.
Which is the correct definition of “Hypothesis”?
A tiny piece of matter such as an atom, molecule or ion.
An idea that can be tested.
Solid carbon dioxide.
Volume that does not change with the container.
9.
Eggs take 10 min at sea level and 13 min at altitude. Percentage increase?
23%
30%
130%
3%
10.
Boiling point of water at different altitudes. Calculate the percentage change in "Boiling point (°C)" from 0 to 5000.
Dr Dabour Hub Academy - figure 3
83%
17%
−17%
−20%
11.
Which is the correct definition of “Air pressure”?
Solid, liquid or gas.
Force of the air pressing on a surface.
Graph of temperature against time while cooling.
Height above sea level.
12.
Which is the correct definition of “Anomalous result”?
Particles arranged with no pattern.
State with fixed shape and fixed volume.
A result that does not fit the pattern.
Liquid turning to gas throughout the liquid at the boiling point.
13.
Boiling point of water at different altitudes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
14.
Boiling point of water in cities. About how many times bigger is Mumbai than La Paz?
Dr Dabour Hub Academy - figure 5
2.3
0.6
1.1
1.7
15.
Cooking time of eggs at different altitudes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
16.
Air pressure at different altitudes. Which statement best describes the pattern?
Dr Dabour Hub Academy - figure 7
"Pressure (kPa)" decreases as "Altitude (km)" increases
"Pressure (kPa)" rises to a peak at 0, then falls
"Pressure (kPa)" stays the same
"Pressure (kPa)" increases as "Altitude (km)" increases
17.
Which term matches this definition? “Data collected by others.”
Gas
Conclusion
Secondary data
Hypothesis
18.
Boiling point falls about 1 °C per 300 m. What is it at 1500 m?
−1400°C
95°C
5°C
105°C
19.
Pressure fell from 101 kPa to 62 kPa. Calculate the percentage decrease.
386%
63%
61%
39%
20.
Air pressure at different altitudes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
21.
Water boiled at 90 °C at altitude. By what percentage is that lower than 100 °C?
10%
90%
100%
11%
22.
Which statement is correct?
A hypothesis cannot be tested.
Lower air pressure lets water boil at a lower temperature.
Water boils at 100 °C everywhere.
Pressure cookers lower the boiling point.
23.
Boiling point of water at different altitudes. Between which two values of "Altitude (m)" did "Boiling point (°C)" change the most?
Dr Dabour Hub Academy - figure 9
2000 and 3000
0 and 1000
3000 and 4000
4000 and 5000
24.
Which statement is correct?
Internet data is primary data.
Water boils at a higher temperature at high altitude.
Anomalous results should be hidden.
The results support the hypothesis.
25.
Which statement is NOT correct?
A pressure cooker raises the boiling point.
A line graph makes the pattern easier to spot.
A pie chart best shows boiling point vs altitude.
At 2400 m water boils at about 93 °C.
26.
Cooking time of eggs at different altitudes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
27.
Which statement is NOT correct?
Altitude is height above sea level.
Air pressure is lower at high altitude.
Food cooks faster at high altitude.
At 2400 m water boils at about 93 °C.
28.
The boiling point falls about 3.3 °C for every 1000 m. What is the boiling point at 3000 m? (100 °C at sea level)
901.0°C
90.1°C
109.9°C
96.7°C
29.
Boiling point falls about 1 °C per 300 m. What is it at 900 m?
−800°C
103°C
3°C
97°C
30.
Cooking time of eggs at different altitudes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 11
A
B
C
D
31.
Water boiled at 88 °C at altitude. By what percentage is that lower than 100 °C?
120%
12%
14%
88%
32.
Which statement is NOT correct?
Addis Ababa is at about 2400 m.
Lower air pressure lets water boil at a lower temperature.
Air pressure is higher on mountains.
Reading between points on a graph is interpolation.
33.
Which term matches this definition? “What you expect to happen based on a hypothesis.”
Mixture
Atom
Prediction
Fixed shape
34.
Altitude is height above ____.
the clouds
the sun
the ground
sea level
35.
A ____ makes the pattern easier to spot.
pie chart
line graph
table
bar chart
36.
Addis Ababa is at about ____ m.
24 000
0
2400
240
37.
The investigation does not explain ____ boiling points differ.
why
where
whether
when
38.
Rabia's hypothesis linked altitude to ____.
boiling point
mass
density
melting point
39.
Mumbai is near ____.
2400 m
sea level
the Moon
5000 m
40.
At 2400 m water boils at about ____ °C.
100
110
93
80
41.
More data points make the pattern more ____.
anomalous
biased
random
reliable
42.
An anomalous result is left out and the ____.
result doubled
reason given
data hidden
graph erased
43.
As altitude increases the boiling point ____.
stays the same
increases
doubles
decreases
44.
True or false? Food cooks faster at high altitude.
True
False
45.
True or false? Data from the Internet is secondary data.
True
False
46.
True or false? More data points make the pattern more reliable.
True
False
47.
True or false? Anomalous results should be hidden.
True
False
48.
True or false? Pressure cookers lower the boiling point.
True
False
49.
True or false? Mumbai is near sea level.
True
False
50.
True or false? Results are recorded first in a table.
True
False
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Part of Chapter 1: The Particle Model and States of Matter — see every lesson and quiz in this unit.
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