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GCSE Combined Science · key term
Gases containing nitrogen and oxygen, often written collectively as , formed when nitrogen and oxygen react at high temperatures.
Used by OCR
Specification C6.2f · Chemistry Paper 2
Revise: Atmospheric PollutantsA high-temperature engine can instead produce nitrogen oxides by making nitrogen and oxygen react; these contribute to acid rain and smog.
Carbon monoxide forms because there is insufficient oxygen; nitrogen oxides form because the temperature is high enough for nitrogen and oxygen in the air to react.
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