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Mixtures Quiz

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Quiz for Cambridge KS3 science.
Jeffrey Piggott
Quiz by Jeffrey Piggott, updated more than 1 year ago
Jeffrey Piggott
Created by Jeffrey Piggott about 7 years ago
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Resource summary

Question 1

Question
Which of the following is a chemical change?
Answer

Question 2

Question
A molecule is:
Answer
  • the smallest particle that can exist.
  • the smallest particle of an element that can exist.
  • two or more atoms chemically joined together.
  • the same as an atom.

Question 3

Question
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution?
Answer
  • the solution becomes more concentrated the longer it is boiled.
  • the boiling point decreases the longer the solution is boiled.
  • the freezing point is higher than pure water.
  • the boiling point is lower than pure water.

Question 4

Question
Which method of separation is best to use for checking which ink was used in a fake cheque?
Image:
Separation Q (binary/octet-stream)
Answer
  • 1 filtration
  • 2 crystallisation
  • 3 distillation
  • 4 chromatography

Question 5

Question
Which method of separation is best to use for removing mud in muddy water?
Image:
Separation Q (binary/octet-stream)
Answer
  • 1 Filtration
  • 2 Crystallisation
  • 3 Distillation
  • 4 Chromatography

Question 6

Question
Which order of the three words matches the three substances salt, sodium, seawater ?
Answer
  • compound, element, mixture
  • mixture, compound, element
  • element, compound, mixture
  • element, mixture, compound

Question 7

Question
Which is the best way to get the salt back from some salty water?
Answer
  • Sieving
  • Using a magnet
  • Letting the water evaporate
  • Filtering

Question 8

Question
The best way to separate sand from iron filings is:
Answer
  • adding water and then filtering
  • using a magnet
  • filtering
  • sieving

Question 9

Question
Name the PROCESS you would use to obtain a sample of SOLID SALT from some sea water
Answer
  • Filtration
  • Electrolysis
  • Evaporation
  • Distillation

Question 10

Question
A boy dissolved some salt in warm water. What do we call the resulting mixture?
Answer
  • a filtrate
  • a solution
  • a solute
  • a solvent

Question 11

Question
What process would be used to obtain the solvent from a solution?
Answer
  • Chromatography
  • Distillation
  • Filtration
  • Evaporation

Question 12

Question
Which of the following would you use filtration for?
Answer
  • Separating the solute from a solution
  • Making a solution more concentrated
  • Separating a suspension from a solution
  • Separating the solvent from a solution

Question 13

Question
Put the following processes into the correct order if you wished to obtain pure salt from rock salt.
Answer
  • 1. Evaporate the water 2. Dissolve the salt in water 3. Filter the solution
  • 1. Dissolve the salt in water 2. Filter the solution 3. Evaporate the water
  • 1. Filter the solution 2. Dissolve the salt in water 3.Evaporate the water

Question 14

Question
After filtering a mixture what do we call the liquid that drips through the filter paper?
Answer
  • Distillate
  • Filtrate
  • Residue

Question 15

Question
Crude oil can be separated into different substances using what method of separation?
Answer
  • Fractional distillation
  • Chromatography
  • Simple distillation
  • Filtration
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