sailaja1423
Jun 10, 2015, 11:47 PM
To show break down of food by using the model of chalkpiece kept in vinegar?
joypulv
Jun 11, 2015, 12:44 AM
What is your question? If you are looking for a video, search Youtube.
ma0641
Jun 11, 2015, 06:59 PM
Almost any phone today can do that. Chalk is Calcium Carbonate and will react with the acetic acid. It gives off CO2. Otherwise, take a before, during and after picture.