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Combustion of fuels core practical
By Phoenix Hoyle
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Last updated 10 months ago
29 questions
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Review of Year 8 fuels topic
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Combustion of alcohols core practical
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Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
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Question 10
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Question 11
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Question 12
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Question 13
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Question 14
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Question 15
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Question 16
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Question 17
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Question 18
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Question 19
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Question 20
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Question 21
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Question 22
22.
How would you calculate the mass of alcohol needed for a 1
o
C rise in temperate?
mass of alcohol needed for a 1
o
C rise = ____________________/ _____________________
Other Answer Choices:
drag_indicator
mass of alcohol
drag_indicator
temperature rise
Question 23
23.
Question 24
24.
Question 25
25.
How would the following error affect the value for the mass of alcohol needed for a 1
o
C rise in temperature?
Evaporation of alcohol - Mass of alcohol combusted will be _____________ so the estimate will be _____________ .
Other Answer Choices:
drag_indicator
too high
Question 26
26.
How would the following error affect the value for the mass of alcohol needed for a 1
o
C rise in temperature?
incomplete combustion - Mass of alcohol combusted will be _____________ so the estimate will be _____________ .
Other Answer Choices:
drag_indicator
too high
Question 27
27.
How would the following error affect the value for the mass of alcohol needed for a 1
o
C rise in temperature?
Energy loss to surroundings - Mass of alcohol combusted will be _____________ so the estimate will be _____________ .
Other Answer Choices:
drag_indicator
too high
Question 28
28.
How would the following error affect the value for the mass of alcohol needed for a 1
o
C rise in temperature?
Volume of water higher than intended - Mass of alcohol combusted will be _____________ so the estimate will be .
Other Answer Choices:
drag_indicator
too high
Question 29
29.
Run the simulation and answer the following question
As the number of carbons on the alcohol increases the mass of the alcohol needed for a 1
o
C increase in temperature ______________
Other Answer Choices:
drag_indicator
decreases
drag_indicator
increases
The products for complete combustion of a hydrocarbon are:
carbon dioxide and water
carbon monoxide and water
water only
The products for incomplete combustion of a hydrocarbon are:
carbon dioxide and water
carbon monoxide and water
water only
soot and water
The product(s) for combustion of H₂ is/are:
carbon dioxide and water
carbon monoxide and water
water only
soot and water
Carbon monoxide is a toxic gas because it:
binds to white blood cells preventing them from transporting oxygen
binds to red blood cells preventing them from transporting oxygen
binds to red blood cells preventing them from transporting carbon dioxide
binds to white blood cells preventing them from transporting carbon dioxide
Which type of combustion causes soot buildup in appliances?
incomplete
complete
Which impurity in fuels will form SO₂ in combustion of coal?
sulfur
nitrogen
What environmental problem is caused when SO₂ dissolves in water?
global warming
acid rain
What pollutant gas is formed at the high temperatures and pressures in car engines?
NO
x
SO
2
Which of the following are disadvantages of hydrogen fuels?
Expensive to produce and requires energy for the production process.
Difficult and dangerous to store and move around (usually stored as liquid hydrogen in highly pressurized containers).
water is the only product
CO
2
is not produced
Which of the following are advantages of hydrogen fuels?
Expensive to produce and requires energy for the production process.
Difficult and dangerous to store and move around (usually stored as liquid hydrogen in highly pressurized containers).
water is the only product
CO
2
is not produced
Petrol, kerosene, and diesel oil are non-renewable fossil fuels obtained from:
Crude oil
Natural gas
Methane is a non-renewable fossil fuel found in natural gas.
True
False
Fossil fuels and natural gas are:
renewable
non-renewable
What is used to measure the change in mass of the fuel?
Balance
Mass balance
Scale
Measuring cylinder
Thermometer
How is the change in mass calculated?
Final mass - initial mass
Initial mass - final mass
Final mass + initial mass
Which variable is the type of alcohol combusted? (1 Point)
Dependent
Control
Independent
Which variable is the volume of water heated? (1 Point)
Dependent
Control
Independent
Which variable is the height of the beaker above the flame? (1 Point)
Dependent
Control
Independent
Which variable is the material the beaker is made out of above the flame? (1 Point)
Dependent
Control
Independent
Which variable is the presence or absence of a wind guard? (1 Point)
Dependent
Control
Independent
Which variable can be calculated using the temperature change of the water and the mass of alcohol combusted? (1 Point)
Dependent
Control
Independent
Which variable is the mass of alcohol needed for a 1°C rise in temperature? (1 Point)
Dependent
Control
Independent
Which of the following are possible errors in this experiment? (4 Points)
Heat loss to the surroundings
Incomplete combustion
Evaporation of the alcohol
Water continuing to increase in temperature after combustion has finished