Science: Separating Materials

This term we have been investigating how to separate materials.  We have used a range of equipment, experimented and tested out our ideas.  We are working hard on explaining our thinking and results.

We went on to look at several different separation methods:

The children even made their own filters!

Some of the water did look cleaner after being through the filter but the children still weren't keen to drink it- I don't blame them!  Very sensible children! 

Separating solid materials


We learnt to: 
-compare and group materials based on their properties (e.g. hardness, solubility, transparency, conductivity, [electrical & thermal], and response to magnets).

-describe how a material dissolves to form a solution; explaining the process of dissolving.

-describe and show how to recover a substance from a solution.

-describe how some materials can be separated.

-demonstrate how materials can be separated (e.g. through filtering, sieving and evaporating).

-demonstrate that some changes are reversible and some are not.

-explain how some changes result in the formation of a new material and that this is usually irreversible.

-discuss reversible and irreversible changes.

-give evidenced reasons why materials should be used for specific purposes.