How do you keep an ICE CUBE from melting at room tempeture?

Question

This is for a school project
matterial that are a must.....
Small/Large bag
May use anything else but, not premade coolers, extra ice...

Answer 1

Use the 'room temperature' of an unheated room in Antarctica.

Insulate it to slow the melting.

Put it inside something cooler than 0 C, such as the ice/salt brine used in an ice cream maker, or cooled by evaporating alcohol.

Answer 2

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RE:
How do you keep an ICE CUBE from melting at room tempeture?
This is for a school project
matterial that are a must.....
Small/Large bag
May use anything else but, not premade coolers, extra ice...

Answer 3

Lots of insulating material to minimise absorption of thermal energy from the surroundings.

You cannot totally prevent the ice cube from melting, because there will always be a temperature difference of 25 degrees Celsius.

What you can do though, is to put insulation. Like styrofoam and such.

Do you know what is a thermos/Dewar flask? It keeps its contents at ALMOST the same temperature for a long time, because it minimises the transfer of thermal energy.

Placing it in a vacuum only prevents conduction and convection, which require a material medium. Radiation can still operate, but if you really want to minimise radiation, you can use a bag with inside lined with silver.

That's crazy.

Answer 4

The ice melts because it is changing in temperature (getting warmer).

The temperature changes because the ice is gaining energy.

Energy transfers through two processes; conduction and radiation.

To prevent conduction the ice should touch nothing, this is impossible so it should touch as little as possible, suspend it by a string inside a box. Air will also conduct energy so you should suck out all the air in the box. An absolute vacuum would be good, but unlikely that it would happen.

To prevent radiation the box should be protected from light and other forms of radiation. Cover the box in lead, that should work well.

Nothing is really absolute, so the ice will melt eventually, no matter how well you prevent it from heating up.

Answer 5

In our village area a very raw method is used. Keep the cube in a box of saw dust.

Answer 6

The ice cube must be placed in a vacuum. We did an experiment like this in a chem. class.

Answer 7

put it in a very cold room.
joe c