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.