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Changing Materials

Contents. Useful Products from OilUseful Products from Metal OresUseful Products from Rocks Useful Products from Air Representing ReactionsQuantitative ChemistryChanges to the Earth and AtmosphereThe Rock Record. Useful Products From Oil. What is crude oil?Fractional distillationCracking a

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Changing Materials

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    1. Changing Materials

    2. Contents Useful Products from Oil Useful Products from Metal Ores Useful Products from Rocks Useful Products from Air Representing Reactions Quantitative Chemistry Changes to the Earth and Atmosphere The Rock Record

    3. Useful Products From Oil What is crude oil? Fractional distillation Cracking and its products Fuels Plastics

    4. What is crude oil? Crude oil is a mixture of a very large number of compounds. It is formed from the remains of plants and animals which died millions of years ago. This is why it is called a fossil fuel. Most of the compounds in crude oil consist of molecules made up of hydrogen and carbon atoms only, we call these type of compounds hydrocarbons. We represent hydrocarbons in the following ways:

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