Q.1
If you evaporated sea water, leaving the salt behind, how could you collect the water?
  • By filtering
  • By condensation
  • By dissolving
  • It would be impossible
Q.2
What might you use to separate a mixture of sand and iron filings?
  • A filter
  • A sieve
  • A magnet
  • A spoon
Q.3
What do we call a material that will not dissolve in water or another liquid?
  • Impermeable
  • Permeable
  • Insoluble
  • 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?
  • To keep the tea leaves dry
  • To keep the tea flavor inside the tea bag
  • To keep the tea leaves from burning
  • 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?
  • Bicarbonate of soda
  • Cotton wool
  • Sand
  • Filter paper
Q.6
Which of the following is an example of a mixture?
  • Cake batter
  • Air
  • Sedimentary rocks
  • All of the above
Q.7
How could a mixture of salt and sand be separated?
  • By sieving only
  • By adding water
  • By filtering only
  • By dissolving the salt in water and then filtering
Q.8
What method would be used to separate a solution of sugar and water?
  • Boiling the water until it evaporated
  • Sieving the solution
  • Filtering the solution
  • Using a magnet
Q.9
Which of the following would dissolve in water?
  • Oil
  • Soap
  • Clay
  • Chalk
Q.10
Which one of the following is a solution?
  • Coffee
  • Sweet tea
  • A mixture of sand and water
  • Carbonated water
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