I need to keep an icecube frozen?

Question

I cannot use an icechest or dry ice. My time frame is 3 1/2 hours. Any advice would be greatly appreciated!

Answer 1

put iceube in a sandwich bag.

take another freezer bag, and fill with ice.

dump a cup of rock salt into the freezer bag with the ice.

mix salt and ice thoroughly.

wait a few minutes.

place sandwich bag with icecube into freezer bage with ice and salt.

same way icecream is made by hand!

Answer 2

"Hot ice"

Hot ice is the name given to another surprising phenomenon in which water at room temperature can be turned into ice that remains at room temperature by supplying an electric field of the order of 106 volts per meter.[4]

The effect of such electric fields has been suggested as an explanation of cloud formation. The first time cloud ice forms around a clay particle, it requires a temperature of −10 °C, but subsequent freezing around the same clay particle requires a temperature of just −5 °C, suggesting some kind of "ice memory".[5]"

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Answer 3

An insulated jar (like a Thermos) that you have cooled already to freezing before you put the ice cube in.

Answer 4

umm hello freezer u never said you didnt have 1

Answer 5

http://www.cosm.sc.edu/cse/icecube.htm
http://pbskids.org/zoom/activities/sci/keepacube.html

my thought was sand...and after doing some reaseach I think it would work...check the above link for a simular project