dimecres, 10 de maig del 2017

Acid and base challenge: what is there inside the test-tubes?

Pupils from 4th Physics and Chemistry went to the lab and found 6 test-tube with 6 mysterious substances. They have to guess which substance is in the 6 test-tubes from a list of 12 by using red cabbage juice for knowing if it's an acid or a base (or even a neutral substance) and using litmus paper for having an approximation of its pH.

The results of the experiment are so interesting and very visual!

(Photo by Paula Merino)

Will the pupils guess what substance is in each test-tube? We will see...