Determining whether or not hot water can freeze faster than cold water may seem like a no-brainer after all, water freezes at 0 degrees celsius. Cold water, the less heat that needs to be lost to reach 32 f the faster the water will freeze the story about hot water freezing quicker is an old wives tale. Brief summary: students will participate in or observe a simple experiment to find out whether hot or cold water freezes fastest students can use the predict, observe, explain table on the student worksheet to describe and reflect upon this experiment you will need. If the hot water starts at 999°c, and the cold water at 001°c, then clearly under those circumstances, the initially cooler water will freeze first however, under some conditions the initially warmer water will freeze first: if that happens, you have seen the mpemba effect.
The short answer is that hot water will freeze first if the cold water sample has solutes (contaminates or trace minerals) the solutes increase the freezing point depression which means the water will take longer to freeze. The mpemba effect the mpemba effect is the phenomenon where hot water freezes quicker than cold water the royal society of chemistry offered £1000 to the person or team producing the best and most creative explanation as to why this occurs. Does hot water really freeze faster watch this video to find out find a complete description and more at home science projects at wwwscienceoffcenterorg. The statement “hot water does not cool more quickly than cold” is vague and imprecise hot water can be made to cool more quickly than cold by supplying more energy to the cooling of hot water, but it is under such a non-specific premise that the mpemba effect has become an artefact in popular science.
If the hot water is at 999°c and the cold water at 001°c, then clearly under those circumstances the cold water will freeze first but under some conditions the warmer water freezes first the effect is named after erasto mpemba who first encountered the phenomenon in 1963 when he froze ice cream mix that was hot in cookery classes and. File this under counterintuitive: under certain conditions, scientists and curious folks alike have observed hot water freezing faster than cold water. The effect can also have some real world implications, such as whether to use boiling water to defrost the windscreen of your car on a winters day and whether hot water pipes are more prone to. Objective the goal of this project is to investigate the question, can hot water freeze faster than cold water thorough background research, a precise formulation of the hypothesis, and careful experimental design are especially important for the success of this experiment. Write your hypothesis in your notebook, including whether you think the hot, warm, or cold water would freeze first and why using your marker, write hot on one of your sticky labels repeat with labels for warm and cold.
Use a given setting on an electric hot plate and clock the time between start and boiling for a given pot containing, say, one quart of water first start with the water as cold as the tap will. To start with, water freezes faster when it starts out hot is not terribly precisethere are lots of different experiments you could try, over a huge range of initial conditions, that could all give different results. The experiment explores the mpemba effect, which is the phenomenon that warm water freezes faster than cold water the experiment tests whether warm water or cold water freezes faster by keeping different temperatures of water in the freezer and timing them until they reach 32 degrees fahrenheit/0 degrees celsius. For centuries, scientists have puzzled over a counter-intutive observation: hot water, for some reason, seems to freeze faster than cold fortunately, now a team of physicists has worked out why.
Palmer, w p (1993) does hot water freeze faster than cold or why mpemba's ice cream is a discrepant event, the journal of the science teacher association of the northern territory, volume 12, pp 42-50 abstract a discrepant event is a happening contrary to our current beliefs. Evaporation - more hot water will evaporate than cold water, thus reducing the amount of water remaining to be frozen mass measurements lead us to believe this is an important factor when chilling water in open containers, though it isn't the mechanism that explains how the mpemba effect occurs in closed containers. If hot water freezes faster, maybe cold water boils faster again, this defies common sense—and again, say scientists, it’s simply wrong hot water from the tap should in fact boil much faster than cold water.
Hot water can freeze faster than cold water in a lot of ways: 1 put hot water inside a freezer, while put cold water inside a fridge  2allow hot water to vaporize so that a little amount of water will be really refrigerated, it will freeze faster than a large amount of cold water  explore the many possibilitieshot water cannot freeze faster than cold water. The mpemba effect is a process in which hot water can freeze faster than cold water the phenomenon is temperature-dependent the phenomenon is temperature-dependent there is disagreement about the parameters required to produce the effect and about its theoretical basis. Does hot water freeze faster than cold water it is not guaranteed if you conduct this experiment the hot water will freeze faster there is a 50-50% chance the hot water will freeze faster me and my partner both decided on whether or not hot water freezes faster than cold water we both took the knowledge that we know of this topic and. Now a team of physicists believe they may have solved the centuries-old mystery of why hot water freezes faster than cold water hot water freezing first day and whether hot water pipes.