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C9: Quiz 4 – Answers
C9: Quiz 4 – Answers
1)
a) hydrocarbon + oxygen –> carbon dioxide + water
or, fuel + oxygen –> carbon dioxide + water
b) The two substances are:
a) hydrocarbon + oxygen –> carbon dioxide + water
or, fuel + oxygen –> carbon dioxide + water
b) The two substances are:
- carbon monoxide
- particulates/ carbon (C)/ soot
2) Sulfur dioxide (SO2) and nitrogen oxides (NOx)
3) The two issues are:
4)
a) Carbon monoxide (CO) is a poisonous gas as it binds to the haemoglobin in our red blood cells. This reduces the body’s ability to take oxygen around the body, which can lead to an individual fainting, becoming unconscious and maybe even dying
b) Carbon monoxide is an odourless (has no smell) and colourless gas
5) Any two from:
6)
a) The sulfur dioxide comes from the sulfur impurities in the fuels
b) The nitrogen oxides come from nitrogen and oxygen in the air reacting in hot combustion engines (the high temperature of combustion engines provides the energy needed for nitrogen and oxygen to react)
7) Respiratory issues
3) The two issues are:
- Respiratory issues as the particulates can be inhaled and damage the respiratory system (the lungs and trachea).
- Global dimming is the reduction of sunlight hitting the earth’s surface as light is absorbed and reemitted by the particulates
4)
a) Carbon monoxide (CO) is a poisonous gas as it binds to the haemoglobin in our red blood cells. This reduces the body’s ability to take oxygen around the body, which can lead to an individual fainting, becoming unconscious and maybe even dying
b) Carbon monoxide is an odourless (has no smell) and colourless gas
5) Any two from:
- Acidification of lakes and rivers – acid rain falling in rivers and lakes makes them acidic, which can cause fish and plants to die. This can have an effect on the whole ecosystem and reduce biodiversity.
- Acidification of soil – acid rain results in soil that the rain lands on becoming more acidic, which can cause trees and plants to die. This can also have an effect on the whole ecosystem and biodiversity.
- Dissolving of buildings/ statues – acid rain dissolves buildings and statues that are made out of limestone, sandstone or marble. This is because the acid rain reacts with these rocks.
6)
a) The sulfur dioxide comes from the sulfur impurities in the fuels
b) The nitrogen oxides come from nitrogen and oxygen in the air reacting in hot combustion engines (the high temperature of combustion engines provides the energy needed for nitrogen and oxygen to react)
7) Respiratory issues
Questions
Try not to use the information in the later questions to help you answer the earlier questions.
1)
a) Write down the chemical word equation for complete combustion.
b) Give the two substances that can be produced during incomplete combustion.
2) Give the two pollutants/ substances that lead to acid rain.
3) Incomplete combustion results in particulates being released. Give and briefly explain the two issues associated with particulates.
4) Incomplete combustion results in carbon monoxide being produced.
a) Explain why carbon monoxide is an issue.
b) Why is it hard to detect carbon monoxide?
5) Give and explain 2 effects of acid rain.
6) Acid rain is caused by sulfur dioxide and nitrogen oxides.
a) Explain where the sulfur dioxide comes from.
b) Explain where the nitrogen oxides come from and how they are produced.
7) In addition to acid rain, what is another issue with sulfur dioxide and nitrogen oxides?
Try not to use the information in the later questions to help you answer the earlier questions.
1)
a) Write down the chemical word equation for complete combustion.
b) Give the two substances that can be produced during incomplete combustion.
2) Give the two pollutants/ substances that lead to acid rain.
3) Incomplete combustion results in particulates being released. Give and briefly explain the two issues associated with particulates.
4) Incomplete combustion results in carbon monoxide being produced.
a) Explain why carbon monoxide is an issue.
b) Why is it hard to detect carbon monoxide?
5) Give and explain 2 effects of acid rain.
6) Acid rain is caused by sulfur dioxide and nitrogen oxides.
a) Explain where the sulfur dioxide comes from.
b) Explain where the nitrogen oxides come from and how they are produced.
7) In addition to acid rain, what is another issue with sulfur dioxide and nitrogen oxides?