Materials

How to explain and demonstrate dissolving

What's the difference between a mixture and a solution? 

Separating Materials:  The basics

Separating Materials:  Separate materials by their properties

Separating Materials:  Using a filter to separate materials

Separating Materials:  How to separate two liquids 

Chemical Reactions at Second Level

This video explains the difference between a chemical reaction and a physical change.

Chemical Reactions:  Investigation 1

Chemical Reactions:  Investigation 2

Chemical Reactions:  Investigation 3

Chemical Reactions:  How to make a fire extinguisher