yr7 slide share stuff
TRANSCRIPT
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Materials Flashcards
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air
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A mixture consisting of 78% nitrogen, 21% oxygen and 1% other gases & water vapour.
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alloy
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A mixture of metals, e.g. brass.
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Water boils at 100ºC
boiling point
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The temperature at which a liquid changes to a gas.
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chromatography
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A method of separating substances.The substances are separated as they move, in a solvent, through a material, e.g. paper.
The substances often move at different speeds.
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condenser
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A piece of apparatus which coolsa gas to change it to a liquid.
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crude oil
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A valuable mixture of many different hydrocarbons. Many
useful chemicals can be extracted from it.
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dissolve
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The process that occurs when a solute is added to a suitable solvent, e.g. salt will dissolve in water.