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Laabri

Combustion of fuels core practical

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Last updated 2 months ago
29 Nsɛmmisa
Review of Year 8 fuels topic
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Combustion of alcohols core practical
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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

The products for complete combustion of a hydrocarbon are:

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2.

The products for incomplete combustion of a hydrocarbon are:

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3.

The product(s) for combustion of H₂ is/are:

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4.

Carbon monoxide is a toxic gas because it:

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5.

Which type of combustion causes soot buildup in appliances?

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6.

Which impurity in fuels will form SO₂ in combustion of coal?

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7.

What environmental problem is caused when SO₂ dissolves in water?

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8.

What pollutant gas is formed at the high temperatures and pressures in car engines?

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9.

Which of the following are disadvantages of hydrogen fuels?

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10.

Which of the following are advantages of hydrogen fuels?

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11.

Petrol, kerosene, and diesel oil are non-renewable fossil fuels obtained from:

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12.

Methane is a non-renewable fossil fuel found in natural gas.

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13.

Fossil fuels and natural gas are:

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14.

What is used to measure the change in mass of the fuel?

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15.

How is the change in mass calculated?

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16.

Which variable is the type of alcohol combusted? (1 Point)

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17.

Which variable is the volume of water heated? (1 Point)

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18.

Which variable is the height of the beaker above the flame? (1 Point)

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19.

Which variable is the material the beaker is made out of above the flame? (1 Point)

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20.

Which variable is the presence or absence of a wind guard? (1 Point)

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21.

Which variable can be calculated using the temperature change of the water and the mass of alcohol combusted? (1 Point)

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22.

How would you calculate the mass of alcohol needed for a 1oC rise in temperate?

mass of alcohol needed for a 1oC rise = /

Mmuae Afoforo a Wobɛpaw:
mass of alcohol
temperature rise
Asemmisa {{asɛmmisaAhyɛnsode}}
23.

Which variable is the mass of alcohol needed for a 1°C rise in temperature? (1 Point)

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24.

Which of the following are possible errors in this experiment? (4 Points)

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25.

How would the following error affect the value for the mass of alcohol needed for a 1oC rise in temperature?

Evaporation of alcohol - Mass of alcohol combusted will be so the estimate will be .

Mmuae Afoforo a Wobɛpaw:
too high
Asemmisa {{asɛmmisaAhyɛnsode}}
26.

How would the following error affect the value for the mass of alcohol needed for a 1oC rise in temperature?

incomplete combustion - Mass of alcohol combusted will be so the estimate will be .

Mmuae Afoforo a Wobɛpaw:
too high
Asemmisa {{asɛmmisaAhyɛnsode}}
27.

How would the following error affect the value for the mass of alcohol needed for a 1oC rise in temperature?

Energy loss to surroundings - Mass of alcohol combusted will be so the estimate will be .

Mmuae Afoforo a Wobɛpaw:
too high
Asemmisa {{asɛmmisaAhyɛnsode}}
28.

How would the following error affect the value for the mass of alcohol needed for a 1oC rise in temperature?

Volume of water higher than intended - Mass of alcohol combusted will be so the estimate will be .

Mmuae Afoforo a Wobɛpaw:
too high
Asemmisa {{asɛmmisaAhyɛnsode}}
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 1oC increase in temperature

Mmuae Afoforo a Wobɛpaw:
increases
decreases