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GCSE Science (OCR)
Revision for OCR Gateway (Unit C1) fuels & combustion
Question | Answer |
---|---|
What is the scientific term for burning? | Combustion |
Which gas is essential for combustion? | Oxygen |
What is the percentage of oxygen in the atmosphere? | 21% |
What is the percentage of carbon dioxide in the atmosphere? | 0.035% |
What is the definition of a hydrocarbon? | A compound containing ONLY hydrogen and carbon |
What colour is the bunsen burner flame when the air hole is open, letting in plenty of oxygen? | Blue |
What colour is the bunsen burner flame when the air hole is closed, not letting in much oxygen? | Yellow |
What is the name of the poisonous gas produced when incomplete combustion takes place? | Carbon monoxide |
What sort of health problem can be caused when some fossil fuels burn releasing sulphur dioxide? | Asthma |
What is the name of the device fitted to car exhausts to reduce pollution from carbon monoxide and nitrogen oxides? | Catalytic converter |