This week primary 5 conducted an investigation on acids and alkalis. We have learned about the existence of the two and that they balance each other out. There are many different acids and alkalis that are found around the home! We tested these liquids to find out which were acidic and alkali using indicator paper (litmus paper). There is a third category on the pH scale which is known as NEUTRAL which means it is neither acid or alkali. Please read our power point to find out more.