what does an indicator do
An indicator is a chemical compound that changes colour and structure when exposed to certain conditions and is therefore useful for chemical tests. Litmus, for example, is â¦ an indicator that becomes red in the presence of acids and blue in the presence of bases.+ 19 others found this useful. MikizuNg Vasabi.ndicator is a process which is used to find out the substanceis acid,base and salt. example: litmus paper and termuric both are natural indicator. example of artificial indic â¦ ator: mithyl orange and phenolphtaceil. 4 people found this useful.