Separation Techniques_Filtration, Evaporation, Crystallisation

A small amount of sodium chloride is dissolved into a beaker of water. Which of the following is the solvent?

• water

• beaker

• sodium chloride

Solid substances that can dissolve in liquids are described as .... but solids that cannot dissolve are described as ... .

• simple, indivisible

• indivisible, soluble

• soluble, insoluble

• insoluble, simple

Filtration involves using a bunsen burner flame to evaporate a solvent from a solution.

• true

• false

What is the best method to obtain a sample of salt from a salt solution?

• filtration

• evaporation

• fractional distillation

Which of the following steps are correct for carrying out the process of crystallisation?
(Select all that apply.)

• Stop heating when crystals start to form and allow the solution to cool down.

• Immediately put the hot solution in a freezer to speed up crystal formation.

• Dry the crystals, for example, by using a drying oven.

• Stir continuously while heating to ensure no crystals form.

• Heat the solution until you start to see crystals forming.

how would you separate pieces of rock from a solution of salt water?

• distillation

• filtration

• evaporation

• crystallisation