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Revision - Unit 3
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Give an example of a solution.
Any solution!
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Mention two mixtures that can be separated by evaporation.
Solutions
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Mention three irreversible changes.
Any irreversible changes.
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Mention three reversible changes.
Any reversible changes.
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Mention three insoluble substances.
Sand, flour, rocks, etc.
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How would you separate a mixture of sand and pebbles?
Sieving
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How would you separate a mixture of sugar and water?
Evaporation.
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Give one example of a mixture.
Any mixture!
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Name the two parts of a solution. Give examples.
Solvent and solute. Any examples.
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Mention three mixtures that can be separated by sieving.
Solid + solid mixtures.
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What is a mixture?
A mixture of two or more substances mixed together.
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What is a solution?
A mixture between a solvent (liquid) and a solute (soluble solid).
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Mention three mixtures that can be separated by filtration.
Solid and liquid mixtures.
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Mention two factors that affect the solubility of a solute.
Solvent temperature, stir speed, grain size.
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