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Science
Solutions

Starter quiz

  • What does Brownian motion describe?
    • The motion of particles in a solid.
    • The random motion of particles in a fluid.  ✓
    • The movement of particles in a pure substance.
    • The method of separating mixtures.
  • Match the measurement unit to what it measures:
    • grams (g)
      ⇔
      mass ✓
    • centimetres cubed (cm³)
      ⇔
      volume ✓
    • degrees Celsius (℃)
      ⇔
      temperature ✓
    • metres (m)
      ⇔
      distance ✓
  • What is a mixture?
    • A combination of substances with fixed boiling points.
    • A pure substance with no impurities.
    • A combination of two or more substances that can be physically separated.  ✓
    • A liquid solution.
  • The term for a solid that dissolves in a solvent to form a solution is called a...
    • 'solute' ✓
  • What does the conservation of mass mean in the context of making a solution?
    • The mass of the solution is always zero.
    • The mass of solute and solvent equals the mass of the solution.  ✓
    • The mass of the solution is always more than its components.
    • The mass of the solution changes with temperature.
  • When an insoluble solid is added to a liquid, a common observation is that the substance ______ to the bottom of the container over time.
    • 'settles' ✓
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