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Edexcel GCSE Chemistry Topic 8 - Fuels And Earth Science 




Below is everything the examiners think you know, if you're not sure of something click on the link to watch my YouTube video explanation. For a copy of these you can print off, get the FREE revision guide I wrote for you.


 • I can define the term hydrocarbon  Video 1Video 2 

 • I can describe the makeup of crude oil

 • I can describe how hydrocarbons differ from each other

 • I can recall why we need to distil oil into fractions  Video 1 Video 2 

 • I can recall the names uses for the fractions of crude oil

 • I can describe the process of fractional distillation

 • I can recall how boiling point changes with chain length

 • I can recall how viscosity changes with chain length

 • I can recall how flammability changes with chain length

 • I can describe the reasons why we need to crack long hydrocarbon chains

 • I can describe the process of cracking by steam and via a catalyst

 • I can define the term homologous series

 • I can explain the similarities and difference between members of a homologous series

 • I can recall the equation for complete combustion

 • I can recall the equation for incomplete combustion

 • I can compare complete and incomplete combustions

 • I can recall that carbon monoxide is toxic

 • I can describe the effects that carbon dioxide has on the atmosphere

 • I can describe the effects that sulfur dioxide has on the atmosphere

 • I can describe the effects that water vapour has on the atmosphere

 • I can describe the effects that carbon monoxide has on the atmosphere

 • I can describe the effects that nitrogen oxides have on the atmosphere

 • I can describe the effects that carbon particles have on the atmosphere

 • I can evaluate the use of hydrogen as a fuel

 • I can state that the Earth’s atmosphere has changed over time Video 1 Video 2 

 • I can describe that changes that have led to the evolution of today’s atmosphere

 • I can explain how the levels of oxygen increased

 • I can explain how the levels of carbon dioxide decreased

 • I can explain how the levels of water vapour decreased

 • I can describe how to test for the production of oxygen gas

 • I can state the different proportions of the gases in the current atmosphere

 • I can state the greenhouse gases

 • I can describe how these gases interact with radiation

 • I can describe the effect an increased level of these gases in the atmosphere has on the climate

 • I can recall which activities contribute to increased levels of greenhouse gases in the atmosphere

 • I can recall what the predictions are for the effect of greenhouse gases of future temperature levels

 • I can list the major sources of atmospheric pollution

 • I can describe the effects that pollution has on humans, animals and plants