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Middle School: 6th, 7th and 8th Grade
Science
Mixing And Dissolving
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Q.1
When a material is dissolved, what does it make?
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A new substance or material
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A gas
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A force
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A solution
Q.2
Which of the following statements is true?
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There is no limit to the amount of a particular material that can be dissolved by a liquid
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Hot liquid will be able to dissolve more of the solute
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Water can dissolve more of some materials than of other materials
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Different variables affect how much material a solvent can dissolve
Q.3
If you mixed sand, sugar and water, which material would dissolve?
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Sand
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Sugar
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Sand and sugar
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Neither sand nor sugar
Q.4
Sieving would separate which of these mixtures?
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Salt and water
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Sand and salt
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Sand and gravel
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Soil and salt
Q.5
Which of these processes would you use to separate salt from the water in which it has been dissolved?
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Filtration
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Evaporation
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Sieving
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Suspension
Q.6
What is a mixture?
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A pure element
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A material resulting from a chemical reaction
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A chemical compound
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The combination of two or more materials (substances)
Q.7
Which of these would help sugar dissolve more quickly in coffee?
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Using hot coffee
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Using cold coffee
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Using cold sugar
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Not disturbing the sugar as it dissolves
Q.8
What is a solvent?
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The material which has been dissolved in a liquid
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The liquid in which a material has been dissolved
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The particles remaining in suspension
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The material left after evaporation
Q.9
What is a suspension?
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A mixture created by combining two liquids
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A mixture of two gasses
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A clear solution
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A mixture of a solid and liquid, where the solid will not dissolve in the liquid
Q.10
Which of these materials would dissolve in water?
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Icing sugar
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Gelatine crystals
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A candle
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Sea salt
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