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How Does Hot Water Freezes Faster Than Cold Water?

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How Does Hot Water Freezes Faster Than Cold Water?
Introduction

Many people have wanted to know if hot water freezes faster than cold water. The terms cold and hot are very much understood by now. Freezing is when the water is below the freezing point which is 0 degrees ( The dictionary of American slang, 2015). This does not give much of a clear statement of what exactly this paper is about. Freezing hot water faster than cold water is the definition of the Mpemba effect . This paper will add to our understanding of physics.

Physics has a big role in our daily life and in science. If we did not understand physics our lives we would be very different. We would not know about the Mpemba effect. It is important to keep in mind this questions while reading this paper. What does it take
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To answer this research question we must first understand heat and how it works in relationship to a liquid’s freezing point. Heat is an external energy that causes a rise in temperature , expansion , evaporation and other physical changes ( Ammer, 2015) and freezing is the point where liquid or gas turns into a solid. There are four different methods that heat can be transferred to another section. Which are evaporation, radiation, convection and radiation ( Jeng, 1998 ).

Evaporation is when liquid changes into a vapor at a temperature below the boiling point. Evaporation takes place at the surface of a liquid, where molecules with the highest kinetic energy are able to escape. When this happens the average kinetic energy of the liquids is lowered and its temperature decreases ( The American Heritage, 2015 ).
Convection is the transfer of heat by the circulation of movement of the heated parts of liquid or gas ( The American Heritage, 2015 )
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However, they are all related to the freezing point of water. Furthermore, they also affect the way in which heat is transferred. By looking at the different ways heat is transferred we can identify the Mpemba Effect. The Mpemba Effect occurs when both hot and cold water are present ( Meng, 2005). The experimental conditions have to be a process in order to see the speed of change. If the water starts off hot it is more likely to freeze faster than cold water. The cold water will be already in the position of becoming solid as for the hot it will be at the liquid point. If we start the experiment at the same time with those two different temperatures, the hot water will not take long to become

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