
Key words for GSCE Chemistry
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chromatography |
Chromatography is used to separate a mixture of substances.
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stationary |
If something is stationary, it means it is still.
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mobile |
If something is mobile, it means it can move.
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origin |
The origin or pencil line is where a substance starts in chromatography.
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relight |
If you relight something, it means you light it again.
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glowing |
A glowing splint has no flame but is still red.
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bleached |
If something has been bleached, it means the colour has been removed.
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damp |
If something it damp, it means it has soaked up water.
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Rf |
The Rf value is calculated by dividing the distance travelled by the substance by the distance travelled by the solvent.
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separate |
If you separate substances, it means you remove them from one another.
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precipitate |
An insoluble compound suspended in solution is called a precipitate.
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suspended |
If something is suspended, it means it is spread through a liquid.
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