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. The only difference between the two was that the water in one was at a higher (uniform) temperature than the water in the other of course, if the hot water had started at 999° c, and the cold water at 001° c, then clearly under those circumstances, the initially cooler water would have frozen first. So, if you took a tiny bit of really cold water in a glass, and put it outside on a cold day in alaska, it would freeze a lot faster than a big glass of hot water outside on a cold day in georgia hope this helps. Yes, in our experiment, the hot water did in fact freeze faster than cold water this is often called the mpemba effect it is not guaranteed if you conduct this experiment the hot water will freeze faster.
Hot vs cold water: boiling experiment purpose: the purpose of this experiment is to find out whether hot water or cold water will start to boil first if heated under the same conditions. 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. Now a team of physicists believe they may have solved the centuries-old mystery of why hot water freezes faster than cold water known as the mpemba effect, water behaves unlike most other liquids by freezing into a solid more rapidly from a heated state than from room temperature.
Create a science project to find out which will freeze first--tap water, sugar water or salt water write out a hypothesis of which liquid would freeze first and why fill three cups with a half-cup tap water each. We review the mpemba eﬀect, where intially hot water freezes faster than initially cold water while the eﬀect appears impossible at ﬁrst sight, it has been seen in numerous experiments, was reported on by aristotle, francis bacon, and descartes, and has been well-known as folklore around. 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. In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom find this pin and more on school stuff by connie wallace science fair: fatty insulators: does the fat layer under the skin keep an animal warm.
Water temperature is a physical property expressing how hot or cold water is as hot and cold are both arbitrary terms, temperature can further be defined as a measurement of the average thermal energy of a substance 5. 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 but under some conditions the initially warmer water will freeze first: if that happens, you have seen the mpemba effect. Be sure not to make the water too hot you need to be able to comfortably have your hands in this water for a little while procedure submerge your right hand in the pot with cold water.
The girls decide to conduct a scientific experiment to determine whether it is faster to make ice cubes with hot water or cold water now, answer the following questions about the process they used to reach their. It is known that hot water freezes faster than cold water i am not sure if there is a full scientific consensus on why, but my theory is that the heat is creating movement which sets up circulation to move colder water down faster and conduct heat away through the top faster. Science fair: does hot water boil faster than cold find this pin and more on for my boy by lindie mcelroy discover whether cold or hot water from the faucet will boil faster on the stove. 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.
The results of each experiment described above would be the same whether water freezing were exothermic, isothermic, or endothermic for example, consider the liquid nitrogen experiment: you put liquid nitrogen in water and it boils continuously as the water is chilled and then freezes. Determining whether or not hot water can freeze faster than cold water may seem like a no-brainer after all, water freezes at zero degrees celsius and wouldn't water hot enough to kill e coli bacteria (about 120 degrees fahrenheit or 50 degrees celsius) take a longer path than cooler water at a. Aristotle, francis bacon and rene descartes all thought hot water would freeze faster than cold water the idea sounds ridiculous, but don't write it off just yet. Hot water freezes faster than cold water cause cold is the absence of heat and the hot water gives off its heat to the surrounding coldness most of the time it reaches some sort of equilibrium with the cold water and they freeze at relatively the same time.
Does hot water really freeze faster watch this video to find out find a complete description and more at home science projects at wwwscienceoffcenterorg. Just a few days after i read your column on whether hot water freezes faster than cold water (you said it didn't), i happened to come across an article in scientific american entitled hot water freezes faster than cold water. 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.