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Middle School: 6th, 7th and 8th Grade
Science
Mixtures 1
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Q.1
If you evaporated sea water, leaving the salt behind, how could you collect the water?
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By filtering
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By condensation
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By dissolving
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It would be impossible
Q.2
What might you use to separate a mixture of sand and iron filings?
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A filter
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A sieve
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A magnet
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A spoon
Q.3
What do we call a material that will not dissolve in water or another liquid?
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Impermeable
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Permeable
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Insoluble
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Soluble
Q.4
A tea bag is made from tea leaves and an especially porous paper. Besides being a container for the tea leaves, what is the purpose of the paper?
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To keep the tea leaves dry
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To keep the tea flavor inside the tea bag
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To keep the tea leaves from burning
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To filter the mixture of tea leaves and water
Q.5
You are trying to clean some muddy water by using a filter. Which of these materials would you use in building a home made filter?
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Bicarbonate of soda
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Cotton wool
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Sand
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Filter paper
Q.6
Which of the following is an example of a mixture?
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Cake batter
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Air
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Sedimentary rocks
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All of the above
Q.7
How could a mixture of salt and sand be separated?
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By sieving only
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By adding water
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By filtering only
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By dissolving the salt in water and then filtering
Q.8
What method would be used to separate a solution of sugar and water?
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Boiling the water until it evaporated
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Sieving the solution
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Filtering the solution
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Using a magnet
Q.9
Which of the following would dissolve in water?
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Oil
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Soap
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Clay
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Chalk
Q.10
Which one of the following is a solution?
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Coffee
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Sweet tea
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A mixture of sand and water
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Carbonated water
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