C1 - Particles Reteach Week

Look at the list below. Some are pure substances, others are mixtures. Select the three mixtures.​

• air

• water

• fruit juice

• sea water

• oxygen

What does this picture represent?

• solid

• liquid

• gas

When you add salt to water and stir it in, you cannot see it any more. This is because the salt has_________

• melted

• reacted

• dissolved

This happens because the water particles ___________ each salt particle allowing it to mix with the liquid water.

• melt

• hide

• surround

Select the correct statements about a solid

• they have a random arrangement

• they have a fixed arrangement

• they can vibrate about a fixed point

• they can move freely

• they have a strong force of attraction

Select the correct answer about filtration

• filtration separates the solute from the solvent

• filtration separates the solvent from the solution

• filtration separates the solvent from the solute

• filtration separates the solution from the solvent

Which separation technique would you use to separate tea leaves from water

• evaporation

• filtration

• distillation

Which separation technique would you use to get drinking water from sea water

• evaporation

• filtration

• distillation

Which separation technique would you use to get salt crystals from salty water

• evaporation

• filtration

• distillation

Look at the table below. Identify the substance that will be a gas if all three are heated to 80°C.​

• propanol

• ethanol

• water