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Key words Unit 7E
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What is this method of separating substances called?
Chromatography
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Two or more substances jumbled together but not joined together, so they can often be separated
Mixture
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The picture on the left is a salt solution. The picture on the right is a SATURATED salt solution. What is the difference?
The saturated solution cannot dissolve any more salt. (In fact there is excess salt as some hasn't dissolved)
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What is the opposite of opaque?
Transparent - you can see through it easily
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How wold you describe a COLLOID?
Where one substance is dispered through another, and they do not separate easily. They are usually cloudy or opaque
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What does OPAQUE mean?
You cannot see through it at all
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What is a solvent?
The liquid which something (a solute) dissolves in, and a solution is formed
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A description of how to do an experiment, written in clear steps
Method
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The process where a liquid turns into a gas
Evaporation
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This picture shows distillation - pure water is being separated from salty water. How do you think it works?
The pure water boils and evaporates and then condenses back into pure water, leaving the salt behind, as salty water boils at a higher temperature
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This has a fixed volume but can change shape
Liquid
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When a liquid turns into a gas in all parts of the liquid, creating bubbles of gas in the liquid
Boiling
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What is a solute?
The thing that is dissolved in a liquid (solvent) to form a solution
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How would you describe a SUSPENSION?
Two substances that separate if you don't stir them (eg sand and water)
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Something with tiny holes which a liquid can pass through but larger solid pieces are left behind
Filter (noun) (to filter something - verb)
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A substance than cannot dissolve in a liquid is.......
Insoluble
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When a substance breaks up into such tiny pieces in a liquid that it can no longer be seen
Dissolve
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What is a solution?
What is formed when something (solute) is dissolved in a liquid (solvent)
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