So we won't get sick.
Hot water takes longer to boil than cold water because hot water is already closer to its boiling point, so it requires more energy to reach the boiling point compared to cold water.
well, it does not really matter, although cold water in a kettle takes longer to boil
Yes, hot water boils faster than cold water because the molecules in hot water have more energy and are already closer to the boiling point. This means it takes less time and energy to raise the temperature of hot water to the boiling point compared to cold water.
No, hot water boils faster than cold water because it is already closer to the boiling point.
If you are looking at decreasing cooking time you would use cold water. Thermal exchange causes the water temperature to have a drastic increase. If you are just cooking the egg then it doesn't really matter.
Boil it and then leave it in cold water to cool down.
Yes; boiling implies that the water is hot, although it may have been cold before the heating.
I recommend putting hot water in your kettle and timing it getting to the boil, and repeating with the same volume of cold water. Then have a think about why this happens.
Put the mini white potatoes in a large container, put cold water to cover, boil for 6 minutes only, transfer immediately into ice cold water to stop further cooking.Leave them in water for 15 minutes and then do whatever you may do with them. if you boil for too long , they will come out too soft and mushy and you do not want that.
When we boil water and expose the steam (water vapor) to a cold surface, it will condense into tiny drops of water on the cold surface. If you can see the 'steam'rising above the water, it has already condensed into tiny droplets of water in the cool air.
Salt water exists over a wide range of temperatures; there is no required temperature. It is cold at the poles and warmer at the equator. It can freeze when it is cold enough, and you can boil it on the stove.
Water boils faster when it is warm rather than cold. This is because warm water is closer to its boiling point, so it requires less energy to reach that point compared to cold water.