chemistry 0.0 / 5 ? ChemistryCrude oil, cracking and hydrocarbonsGCSEAQA Created by: sarah1rhCreated on: 08-03-14 14:43 Why is crude oil separated into fractions? To make useful fuels/products 1 of 8 Name the products when ethane, burns completely Carbon dioxide and water 2 of 8 Give 3 reasons why fractions with lower boiling points are more useful as fuels They burn more easily, thin runny liquids, burn with little smoke 3 of 8 Name 2 fuels that can be made from renewable sources biodiesel, ethanol, hydrogen 4 of 8 Some exhaust fumes contain particulates. What are particulates and how are they produced? solid soot/ carbon and unburnt fuel, produced by incomplete combustion 5 of 8 Explain why burning some fuels produce sulphur dioxide The fuel contains sulphur (compounds) these burn to produce sulphur dioxide 6 of 8 Propane is used as a fuel for cookers, explain why propane should always be burned in a plentiful supply of air poisonous gas carbon monoxide may be produced in limited supply of of air 7 of 8 Why are some scientist concerned about the carbon dioxide produced by burning fossil fuels The carbon was locked up in fossil fuels; increases carbon d in atmosphere; carbon d is a greenhouse gas; may cause global warming 8 of 8
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