In this module, you will learn:

  • use of evaporation
  • the set up for evaporation

Resources to help you:

  • Textbook: page 81
  • Notebook: page 32

Evaporation

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Evaporation is a method to separate soluble solid (solid that dissolves) from it's solution.


An example of a solution that can be evaporated is sea water (solution) into salt (soluble solid)


A useful example of evaporation is for farming sea salt.

Getting salt from sea water

Source: https://www.youtube.com/watch?v=NW1FGaBRcHs

Filtration set up in the lab

Setting up evaporation in the lab

To set up evaporation, you will need a evaporating dish and a bunsen burner, wire gauze and tripod for heating the mixture.


Residue

The soluble solid that is left on the evaporating dish is called the residue.

The liquid water will be evaporated into water vapour (gas) and escaped into the air.

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