Decanting, Filtration & Magnetic Attraction Quiz

Which of the following is an example of decantation?

• Filtering coffee

• Pouring water off cooked peas

• Boiling saltwater

• Stirring sugar into tea

Filtration is used to separate:

• Two dissolved solids

• A solid that does not dissolve in a liquid

• Two miscible liquids

• Gases from liquids

What passes through the filter paper during filtration?

• Residue

• Filtrate

• Solute

• Sediment

Which mixture CANNOT be separated by filtration?

• Sand and water

• Muddy water

• Saltwater

• Coffee grounds and water

What is the key difference between decanting and filtration?

• Decanting uses heat, filtration does not

• Filtration uses a filter, decanting does not

• Decanting works for gases, filtration does not

• Filtration is faster than decanting

In filtration, the residue is:

• The liquid collected

• The solid trapped on the filter paper

• The dissolved solute

• The solvent

Which method would be best to separate tea leaves from brewed tea?

• Decanting

• Filtration

• Evaporation

• Distillation

Why might decanting be preferred over filtration in some cases?

• It’s faster for large particles

• It requires no equipment

• It works for dissolved solids

• Both a and b

If a mixture contains very fine particles that don’t settle, which method is better?

• Decanting

• Filtration

• Both work equally well

• Neither

Why can’t filtration separate a solution?

• Solutions are already pure

• Solute particles are too small to be trapped

• Filter paper reacts with solutions

• Solutions contain no solids