These have a mixture of indicators so that they have a whole range of colours. I hope that you will be able to remember most of the facts on this page, but you must memorise the definition of indicators. Write it on a small index card. Put the red words on one side of the card and the blue ones on the other. Add the card to your revision pack.
Indicators are chemicals which change colour when they are put into acids or alkalis.
Copyright 1999 - 2000 Gondar Design. All Rights Reserved.