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Below are the previews for the slide in Topic 8 - Fuels and Earth Science. If you click on them, you can see larger versions. If you are on a computer you can press the left and right arrows to move. You can also click the arrows to the left and right of the screen.

Powerpoint Description:

Use this slideshow to help you teach these topics: crude oil and what's inside it, hydrocarbons and their uses as feedstock and fuels, fractional distillation and why it is used, alkanes and their properties, general formulae for alkanes, burning hydrocarbons and what this produces, incomplete combustion and its products, why carbon monoxide is dangerous, pollution from burning fuels, formation of nitrogen and sulfur oxides, fuel cells, oil and gas, how cracking is done, the early atmosphere and its composition, how the atmosphere evolved and the role of plants and volcanoes, changes in oxygen and carbon dioxide levels in the atmosphere, how to test for oxygen, the greenhouse effect, problems to do with pollution, global warming and evidence for it, how humans release greenhouse gases, the effects of global climate change, ways to reduce our carbon footprints.

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