Indicator

Your famous indicator is red cabage juice. It is used to find out if a liquid is basic or acidic. It turns an acidic liquid red and a basic liquid blue. This is like litmus paper.

How To Titrate

When you titrate you find out the how strong an acid or a base is. The first step, is to put some liquid that is acidic or basic in two seperate glasses the same size and pour to the same height. Then use indicator to change it's color. Then if its a base add some drops of acid and each drop it takes until it's green shows how strong it is and add drops of base to acid to see its strength. The more drops you add the stronger it is.