Why Does Cold Water Boil Faster Than Hot Water
Camila Farah
Obviously you have to put more heat into bringing the cold water up to the temperature of the hot water and this will require more time.
Based on this hot water boils much quicker because the temperature of the water is so much closer to the boiling point which is 212 degrees fahrenheit or 100 degrees celsius. Namely that cold water boils faster than hot water. There may be some psychological effect at play. It is a myth that cold water boils faster.
This raises the question why does everyone say to boil cold water instead of hot if hot water takes less time. That the opposite is also true. Hot water can freeze faster than cold. But the cooler water will always take longer to boil.
Cold water and potential convection currents that develop in warmer water during the cooling process. This has led to a popular kitchen myth. The mpemba effect can cause hot water to freeze faster than cold water. Because it takes cold water some time to reach the temperature of hot water cold water clearly takes longer to boil than hot water does.
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Or perhaps from this odd but true fact touted by aristotle.
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