Pollutants (Edexcel GCSE Chemistry): Flashcards

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Pollutants
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Condition causing incomplete combustion

Insufficient oxygen

Pollutants from incomplete combustion

Carbon monoxide (CO) and carbon (soot)

Type of gas carbon monoxide is

Toxic gas

How CO affects red blood cells

Binds to them, preventing oxygen transport

What is soot?

Tiny black particles of carbon

Health effects of soot

Respiratory problems

Source of sulfur dioxide (SO2SO_2)

Burning fossil fuels with sulfur impurities

How acid rain forms

SO2SO_2 + water in clouds → sulfuric acid

Effects of acid rain

Acidifies lakes, damages plants, erodes buildings, corrodes metal

How nitrogen oxides form

Nitrogen + oxygen react at high temperatures

Where nitrogen oxides commonly form

Car engines during combustion

Effects of nitrogen oxides

Contribute to acid rain and photochemical smog

Effects of photochemical smog

Breathing problems, headaches, tiredness

Product when hydrogen burns

Water (H2OH_2O) only

Why hydrogen is a clean fuel

Non-polluting, produces only water, renewable

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