First Mrs Sharma (our teacher) poured some liquid into a well plate and gave us 10 red litmus papers and 10 blue litmus papers. Next we had to make a table and list down all the liquids that we were going to use. After that we dipped each litmus paper into each liquid to see if it was acid, base, or neutral. When we finished that it was time to pack up and go back to school.
Here is a doc with a lot of information on what we did.
First we filled a conical flask with 200ml of water. Next we put 10 drops of food colouring into the conical flask. After that we cut the end of our celery then put it into the conical flask and stirred it. Then we put a plastic bag over it and tied it. When we finished, we had to wait 30 min. 30 min later we had to take the celery out of the conical flask and cut it in half to see if it absorbed any colour.
Here is a video, doc, and photo of what we did
