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Published byAdelia Phillips Modified over 9 years ago
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Adding acids to metals Words – gold, corroded, fizzes, disappear If an acid is added to a (fairly reactive) metal the metal will be quickly ________ by the acid. We can see a reaction happening because the mixture _________ and the metal eventually __________. Some metals, like ____, are so unreactive that nothing will happen.
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Testing for hydrogen “POP”
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Adding acid to carbonates Carbonates are compounds containing carbon and oxygen. When an acid is added to a carbonate the carbonate starts to _______. A gas called ______ _______ is produced. Carbonates used to be used as building materials but aren’t any more because acid rain would eventually ________ the building. Words – dissolve, fizz, carbon dioxide, oxygen
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Testing for carbon dioxide Gas Limewater turns milky/cloudy Limewater
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Fuels Fuels are substances that can be used to release useful amounts of energy when they burn, e.g. Oil Gas Wood
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Burning things When something is burned it reacts with oxygen. For example: Magnesium + oxygen Magnesium oxide Carbon + oxygen Carbon dioxide Sulphur + oxygen Sulphur dioxide The Fire Triangle Fire Fuel Oxygen Heat
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Burning fuels When fossil fuels (coal, oil and gas) are burned they produce water and carbon dioxide. We can use this apparatus to show this: In this example the reaction is: Methane + oxygen Carbon dioxide + water
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