Air Quality: Gases in clean air 3.0 / 5 based on 1 rating ? ScienceChemistryGCSEOCR Created by: Jodie BennettCreated on: 08-01-13 14:50 What is the percentage of nitrogen in the air? 78% 1 of 14 What is the percentage of oxygen in the air? 21% 2 of 14 What is the percentage of argon in the air? 1% 3 of 14 What is the percentage of carbon dioxide in the air? 0.04% 4 of 14 What is the percentage of water vapour in the air? 0-4% 5 of 14 Notes on nitrogen.. It only reacts when very hot 6 of 14 Notes on oxygen.. Needed for respirtation and breathing 7 of 14 Notes on argon.. Not reactive 8 of 14 Notes on carbon dioxide.. Needed for photosynthesis 9 of 14 Notes on water vapour.. Varies with the weather 10 of 14 Do nitrogen and oxygen react in the air? Yes or no. No 11 of 14 Why does nitrogen and oxygen react in a car engine? Because it is very hot which enables nitrogen and oxygen to react and make nitrogen monoxide. 12 of 14 When the nitrogen monoxide reacts with more oxygen in the air, what does it make? Nitrogen dioxide 13 of 14 When the NO2 dissolves in water vapour what does it make? Acid 14 of 14
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