Game of Base and Acid | Kannada
Channel: Arvind Gupta
Date: 15/02/2016

Have you heard your parents complain about ACIDITY for which they take an ANTACID tablet? Today we will see how these antacid tablets work in the stomach. You can do this fun experiment with your friends. You will need some chemicals for this experiment. First you will need a UNIVERSAL INDICATOR. The UNIVERSAL INDICATOR is a chemical which tells us whether a solution is ACIDIC or BASIC. When we add this indicator to any liquid – the color of the liquid will tell us whether it is Acidic or Basic. An Acidic solution will turn RED. If it is Basic it will become BLUE. If the solution is neither acidic nor basic then it will the middle GREEN color. 
First we will test whether water is acidic or basic. So we will add UNIVERSAL INDICATOR to water. As the color becomes GREEN which means that water is neutral. Which means water is neither acidic nor basic. We will make this solution acidic by adding a few drops of Hydrochloric Acid. As the acid is very strong so we will pull it out in a syringe and add drop by drop to the solution. On adding the acid to the water and stirring it the solution becomes RED. The RED color indicates that the water is acidic. Now we will add some strong base – Sodium hydroxide in this acidic solution and see how the color changes. Now the color has changed from green to yellow. Adding a little more base makes the solution blue or basic. Now we will add an Antacid Solution called as Milk of Magnesia to the solution. You will see that the color does not change very much and the solution remains basic. So, the Antacid is also Basic in nature. Now add Hydrochloric Acid and keep noticing the colors on the scale. The transition of colors will go from Bottom to Top. From Blue the color will turn Green and finally the saturated solution will turn RED. It is fun to learn about Acids and Bases with this experiment.

This work is supported by IUCAA (www.iucaa.in) and TATA Trust (www.tata.com/aboutus/sub_index/Tata-trusts)

Credits:,Ashok Rupner, Manish Jain, Pradnya Pujari, Shivaji Mane, Jyoti Hiremath, Arvind Gupta, Vidula Mhaiskar TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org