Evaporation of Solutions

Contents

Key Stage 2

Meaning

Evaporation of a solution is a way to get back a solid that has been dissolved in a liquid.

About Evaporation of Solutions

When you heat a solution the liquid will evaporate leaving the solid behind.

You can separate salt from the water by evaporating the water in an evaporating dish.

Examples

These people collect salt by putting sea water in small ponds and allowing the warm temperatures to evaporate the water away leaving the behind the salt.

Key Stage 3

Meaning

Evaporation of a solution is a way to separate the mixture of a solution to recover the solute that has been dissolved in a solvent.

About Evaporation of Solutions

The evaporation of solutions recovers the solutes but loses the solvent.

Evaporation of solutions can be done by directly heating the solution or by giving time for the liquid to evaporate at low temperatures.

The diagram shows the experimental setup to evaporate away the solvent to leave behind the solute in the evaporating dish.

Key Stage 4

Meaning

Evaporation of solution, sometimes called Crystallisation is a technique used to separate the solute from the solvent in a solution, losing the solvent.

About Evaporation of Solutions