A common misconception is that the colder a liquid is, the faster it freezes. Shockingly, this is untrue!
This mind boggling phenomena is stunning indeed. The Mpemba effect has proven this common belief wrong. For this study, we aim to test if the Mpemba effect is true, and why it is so.
So how did the Mpemba effect come about?
In the 1960s, a student studying in Tarzania, Erasto Mpemba, found that hot ice-cream mixture froze faster than cold ice-cream mixture. Curious, he asked his teacher, who turned him down and said that such a phenomenon could never occur. If Mpemba had been satisfied with the claim
of his teacher and become a passive recipient
of educational explanations, everything would
probably have been quickly forgotten. However,
he remained active in seeking answers to
actual observations and his research activities
despite rejection and ridicule by his classmates
and teachers. A University Teacher, Dr Osborne, came to visit Mpemba's high school. Mpemba, seeing an opportunity to answer his questions, asked Dr Osborne about his problem. Dr Osborne did not reject Mpemba’s observation
a priori and decided to explore it. (Balazovic and Boris Tomasik, 2012) After the testing, Dr Osborne concluded that the phenomenon was indeed true and published it as the "Mpemba Effect".
For our experiment, we are going to test out if hot water freezes faster than cold water and if the freezing rate will be affected by any impurities.