What is a solution? By Dr E Christophy
Introduces solutions and how to find molarities

Periodic Table Groups by Dr E Christophy
Students guess and check the names for the main zones of the periodic table

A pH Exercise by Dr. E Christophy
An interactive exercise calculating the pH of various salt, acid and base solutions

Organic Reactions by Dr. E Christophy
Covers a variety of organic reactions and finishes with a puzzle to complete, revising what has been learned