An indicator does which one of the following in the presence of acids and bases?

Answer 1

Indicators can be used to determine if a substance is a acid or a base because of the reaction that occurs between the substance and the indicator. This creates a color change in the indicator (depending on which indicator you use). If it is a universal indicator, the substance may change from deep red to violet. If it is a litmus indicator, it will only turn either red or blue.

Answer 2

Blue litmus paper, red litmus paper, wide range paper.

You can also use Phenolphthalein, Bromo.Blue, Methyl Orange or the Universal Indicator (these are liquids)

Answer 3

changes color

Answer 4

Phenolphthalein. :)

Answer 5

red acid blue base

Answer 6

color changes.