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6 questions
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  • Q1
    Which process happens when a solid can be observed to 'disappear' in a liquid to make a solution?
    evaporating
    condensing
    dissolving
    boiling
    melting
    30s
  • Q2
    When a process is able to go backwards, or be "undone", it is said to be ...
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    30s
  • Q3
    Match the word to the definition.
    Users link answers
    Linking
    30s
  • Q4
    A volume of salt solution containing 0.50 g of salt was placed in a beaker and left for two weeks on the window sill, after which only crystals of salt remained. How much salt would be present?
    0.40 g
    0.50 g
    0.00 g
    0.25 g
    30s
  • Q5
    Sugar was added to water at 60℃ until no more sugar could dissolve. The solution was left to cool. What would you expect to see and why?
    No change as temperature does not affect the solubility of the sugar.
    Solid sugar would start to form as it is less soluble at a lower temperature.
    No change as the sugar would still be dissolved.
    Solid sugar would start to form as the water would evaporate.
    30s
  • Q6
    When a solution is left to evaporate, the solute left behind can form ...
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    30s

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