Soluble and insoluble | Science | Quizalize & Oak National Academy

Starter quiz

Which of these is a gas at room temperature?
- oxygen ✓
- brick
- water
Which of these materials are metals?
- alumnium ✓
- cork
- paper
- steel ✓
- copper ✓
In which state do materials take the shape of the container they are held in?
- solid
- liquid ✓
- gas
Match the form of water to the temperature range at which you would find it.
- ice
  
  ⇔
  
  below 0°C ✓
- water
  
  ⇔
  
  between 0 and 100°C ✓
- water vapour
  
  ⇔
  
  above 100 °C ✓
Which of these materials would be the best thermal conductor?
- rubber
- plastic
- glass
- metal ✓
On a warm sunny day, if you put a scarf and hat on a snowman, how would it affect the speed the snowman melted?
- It would speed it up.
- It would slow it down. ✓
- It would not affect it.

Some solids dissolve in liquids to form a...
- solvent.
- solution. ✓
- solute.
Solutions are always…
- solid.
- opaque.
- clear. ✓
Solutions…
- are always colourless.
- always have colour.
- may or may not have colour. ✓
When a solid dissolves in a liquid, why can’t we see it anymore?
- Because its pieces are too small and too spread out to be seen. ✓
- Because it becomes invisible in liquid.
- Because it melts, making it harder to see.
What do you call a substance that dissolves in a liquid?
- insoluble
- solvent
- soluble ✓
- dissolvable
What do you call a substance that does not dissolve in a liquid?
- dissoluble
- insoluble ✓
- asoluble
- unsoluble

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Some solids dissolve in liquids to form a solution.
Solutions are always clear, though they may or may not have a colour.
When a solid dissolves, it is broken down to become so tiny we can no longer see it, but it is still there.
A substance that dissolves is said to be soluble.
A substance that does not dissolve is said to be insoluble.

Dissolving is the same as melting.

Teaching slides explain the difference between melting and dissolving.

Dissolve - If a solid dissolves in a liquid, it mixes so completely with the liquid that it cannot be seen.
Solid - A solid keeps its shape and volume.
Liquid - A liquid can flow and take the shape of the bottom of its container.
Soluble - A material that will dissolve is soluble.
Insoluble - A material that will not dissolve is insoluble.