____
Combined science
Edexcel Foundation
States of matter
State changes: fundamentals

Starter quiz

  • As particles gain energy, they are able to overcome the <span class="blank">______</span> between them.
    As particles gain energy, they are able to overcome the ______ between them.
    • 'forces of attraction' ✓
  • For water, what is the temperature at which it turns from the liquid state to the gas state?
    • 0°C
    • 100°C  ✓
    • 50°C
    • –20°C
    • 4°C
  • Match the following key terms to their definitions.
    • boiling
      ⇔
      a substance in liquid state changes to gas state ✓
    • boiling point
      ⇔
      the temperature a substance changes from liquid state to gas state  ✓
    • condensing point
      ⇔
      the temperature a substance changes from gas state to liquid state  ✓
    • freezing point
      ⇔
      the temperature a substance changes from liquid state to solid state ✓
    • melting
      ⇔
      the substance in solid state changes into liquid state ✓
    • melting point
      ⇔
      the temperature a substance changes from solid state to liquid state ✓
  • Which of the following statements describe what happens during condensing?
    • particles move closer together  ✓
    • particles start to align in a fixed arrangement
    • the particles become smaller
    • the temperature of the substance decreases
    • the volume of the substance decreases  ✓
  • If a substance has a melting point of 50°C, at what temperature will it freeze?
    • -10°C
    • 0°C
    • 48°C
    • 50°C  ✓
    • 100°C
  • Models have limitations. What does this image of the particle model NOT attempt to show? Select all that apply.
    Models have limitations. What does this image of the particle model NOT attempt to show? Select all that apply.
    • arrangement of particles
    • movement of particles  ✓
    • forces between particles  ✓
    • elasticity of particles  ✓
+