Tools
Video Overview


Divide the A4 size sheet of paper into into 3 equal parts along the longest side. The width of each part is 7 cm.

Crease the lines and cut the paper along those lines into 3 equal parts with the help of a ruler.

Divide the length of one of the cut parts in to 20 equal parts by making equally spaced marks.



Place the remaining two parts of the paper beneath the part that is already marked.

Start cutting all of them along the marked lines.



Take 2 table spoons of turmeric powder and mix it well in a cup of water.

Dip all your paper strips in turmeric solution.

After the paper strips are soaked well( for 5 minutes) , leave it to dry.



After the yellow litmus papers have dried up you can use a few of them to test for base.

To make litmus paper that tests for acid, take the remaining dry yellow litmus papers and dip them in a basic solution (here Ca(OH)2). The paper turns RED.

Now dip those red strips in turmeric solution again.



Leave it to dry.

Now you have RED and YELLOW litmus papers that can be used to test for ACID and BASE respectively.



The yellow litmus turns red when dipped in base

The red litmus turns yellow when dipped in acid.



What happens when you dip the yellow litmus paper in acid first and base next?

What happens when you dip the red litmus paper in base first and acid next?

What's the difference between a litmus paper and pH paper?

Is there another way to make your own litmus paper?
