litmus paper

 1. blue litmus paper determinants if something is acidic. It turns red in solutions with a pH less than seven

2. Red litmus paper determines if something is alkaline. It turns blue in solutions with pH greater than seven. 

Litmus is a tree fungi and is make into small paper strips or a liquid for testing acids or alkcalines.   

Materials 

1. Red litmus paper 

2.blue litmus paper 

3. Sodium hydroxide 

4. hydroxide acid

5. pipette 

6. 4 test tubes 

Steps.

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

2. Add three drops of hydroxide acid into the blue litmus paper in test tube 1.

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

4.Add three drops of sodium hydroxide to the blue litmus paper in test tube 3. 

5.Add 3 drops of sodium hydroxide to the blue litmus paper in test tube 4.