Can hot water freeze faster than cold water?

yes hot water freezes faster, its a proven fact it makes a chemical reaction between hot and cold. if you want to test this out use ice trays and see for your self. we did it when i was in high school.

think about it

Why did u ask it twice? Under very specific conditions, yes it can. To show you how hard it is to find an instant answer to this, do me a favor... go to www.yahoo.com and type in hot water freeze faster and within 0.13 seconds you can have thousands of pages with an answer to your question. I know that's a long time to wait, but give it a shot. http://math.ucr.edu/home/baez/physics/General/hot_water.html

yes old science

yes, go boil water when its below freezing outside the take the water through it in the air and watch. Then do it with cold water you can see the results yourself. Science behind it has to do with the molecules being separated when heated; being separated allows them to be cooled faster hence water rapidly freezes when hot.

No. The first thing that has to happen to freeze a substanceis to take it to the freezing point. Then the heat of fusion has to be removed as the mlecules get closer together and line up to form crystals. If you have to reduce the temp further, it does not freeze faster.

Yes, it's called the Mpemba effect. Although this is not a common occurance, it does happen.