AQA · Chemistry · 8462
GCSE Chemistry (AQA): Air Pollution
Topic 9 — Chemistry of the Atmosphere. Generated from the caption track of Cognito's lesson video "GCSE Chemistry - Air Pollution - How Pollutants are Made | Why They're Harmful (2027/28 exams)"; each card deep-links to the moment in the video it came from. Lesson 9.04 of Cognito's AQA GCSE Combined Science (Trilogy) and Chemistry course (Higher tier), filed under AQA Chemistry 8462. Teaching by Cognito — https://cognitoedu.org/coursesubtopic/c2-gcse-aqa-h-c_9.04.
12 flashcards · Free to study · No account needed
Study this deck
Preparing your cards…
All questions and answers
Read through the full deck, or practise recalling each answer above.
How are nitrogen oxides formed in a car engine?
Show answer
The high temperatures inside the engine make nitrogen and oxygen from the air react together.
What condition causes incomplete combustion of a hydrocarbon?
Show answer
An insufficient supply of oxygen.
How is sulfur dioxide produced when fossil fuels are burned?
Show answer
Sulfur impurities in the fuel are oxidised to sulfur dioxide gas.
What are the only two products of complete combustion of a hydrocarbon?
Show answer
Carbon dioxide and water.
Particulates are solid particles of ?, also known as soot.
Show answer
carbon
Sulfur dioxide dissolves in cloud water to form dilute ?, which falls as acid rain.
Show answer
sulfuric acid
How do inhaled particulates harm the body?
Show answer
They become stuck in the lungs and damage them, causing respiratory problems.
How does acid rain make it harder for plants to grow?
Show answer
It lands on the plants directly and makes the soil more acidic.
Which two physical properties make carbon monoxide hard to detect?
Show answer
It is colourless and odourless.
Which two pollutants are released by incomplete combustion?
Show answer
Carbon monoxide and particulates (soot).
What is global dimming?
Show answer
The reduction in sunlight reaching Earth's surface because particulates form dark clouds or smog that reflect sunlight back into space.
Why is carbon monoxide toxic to humans?
Show answer
It binds to haemoglobin at the same site as oxygen, so the blood carries less oxygen around the body.
Want to create your own cards? Create a free account. AI generation uses credits.