Fun with Dissolution | English
Channel: Arvind Gupta
Date: 2016-05-04

Friends today we will do an experiment with hot and cold water. I am placing a few drops of color ink first in cold water, and then in hot water. In which glass will the ink mix fast? What do you think? Let us test it out. We can do this experiment at home with ease. For this you will need hot and cold water, dropper and some ink. First we will pour out hot water from a flask. The other glass has cold water. First we will place a few drops of ink very slowly in cold water. See how the ink travels deep inside but spreads very-very slowly. Now place a few drops of ink in hot water. You will find that the ink spreads very quickly in hot water.  Now add ink simultaneously both in the hot and cold glasses. You will see clearly the spread of ink is much faster in the hot water. Why? One reason being that in hot water the molecules move much faster than they move in cold water. 

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