Litmus Paper

Litmus is a tree lichen fungi and is made into small paper strips or a liquid for testing acids or alkalines.
Blue Litmus paper determines if something is acidic. It turns red in solutions with a pH less than 7.

2 Red Litmus paper determines if something is alkaline. It turns blue in solutions with a pH greater than 7.

Materials:

1Red Litmus paper

2Blue Litmus paper

3Sodium Hydroxide

4Hydrochloric acid

5 Pipette

6 4 Test tubes

Steps

1 Rip the litmus paper in half and put half in each test tube.

2 Add 3 drops of hydrochloric acid to the blue litmus paper in test tube 1.

3 Add 3 drops of hydrochloric acid to the red litmus paper in test tube 2.

4 Add 3 drop of Sodium Hydroxide to the blue litmus paper in test tube 3.

5 Add 3 drops of Sodium Hydroxide to the red litmus paper in test tube 4.