Why does boiled water freeze faster?

Answer 1

A perverse observation is given the name of Mpemba Effect, in which a warm liquid freezes more quickly than a cool one. An on-line encyclopedia should list thehistory and the explanations. The effect is real and repeatable. [The associated story I most like was of the professor's lab assistant being asked for the results of his investigations so far. His response was "So far, sir, the warm liquid has always frozen faster than the cool one, but I will repeat the experiment until I get the right answer.']

Answer 2

Based on the Ideal Gas Law, we would have to know the temperature, pressure, and volume of both the boiling water, cold water, and their surrounding in order to answer this question.

Usually, if they are in the same place, the cold water would freeze first because it would take less energy to lower the temperature of the freezing water to turn it into ice than to lower the temperature of the boiling water to turn it into ice.

Answer 3

Quick answer: it doesn't.

Detailed answer: An object or body of substance cools at a rate proportional to the difference between its own temperature and the surroundings; the exact rate is determined by Newton's law of cooling. See the related questio for a better understanding of that topic.

A hotter object will therefore cool faster. However, it will still have to cover more distance, and when it reaches a low enough temperature, its rate of cooling slows as well. So it may cool faster, but by the time it reaches this point, the cooler liquid will have already reached freezing point. So, the hotter liquid cools faster, but the colderliquid freezes faster.

Answer 4

No.. The boiling point and freezing point does not changes when it is heated.

In this case , as the water is pre-heated , it takes long time to cool and freeze than the

cold water.

The boiling point and freezing point will change by the impurities dissolved in the water.

Answer 5

Water contain impurities. Impurities cause the water t reduce its melting point and increases its boiling point, just like when you place salt on ice... It is much colder. Filtered water does not contain impurities which means it is pure, it freese faster and exactly at 0 degrees

Answer 6

Boiling water removes dissolved gases and minerals, which can interfere with the formation of ice crystals. This can lead to faster freezing since the water has fewer impurities that need to be crystallized. Additionally, boiling water increases the rate of evaporation, which can help cool the water down more quickly.

Answer 7

Boiled water at room temperature should freeze faster because the oxygen that was in the water has been removed. It should also freeze clearer.

Answer 8

water at room temperature freezes faster