GCSE Chemistry - Filtration, Evaporation & Crystallisation #6

The video tutorial explains how to separate both soluble and insoluble solids from liquids using techniques like filtration, evaporation, and crystallization. It introduces key terminology such as mixtures, solutions, solutes, and solvents. Filtration is used for insoluble solids, while evaporation and crystallization are used for soluble solids. Evaporation is quick but may cause thermal decomposition, whereas crystallization is slower but preserves the solid's integrity.

What is the term used for a mixture of a liquid and a solid that does not dissolve?

• Solution

• Suspension

• Colloid

• Emulsion

Which technique is used to separate insoluble solids from liquids?

• Evaporation

• Filtration

• Crystallization

• Distillation

What is the main purpose of using filter paper in the filtration process?

• To dissolve the solid

• To allow liquid to pass through while retaining the solid

• To heat the mixture

• To evaporate the liquid

Why might evaporation not be suitable for all solids?

• It is too slow

• It can cause thermal decomposition of some solids

• It requires expensive equipment

• It does not work for insoluble solids

What is the advantage of using crystallization over evaporation?

• It requires no heat

• It prevents thermal decomposition

• It uses less equipment

• It is faster