what is the 'smoke' like thing dat comes out of something dat is really cold? and why does it happen?

Answer 1

1 - "dat" is not a word.
2 - it's moisture in the air turning into water vapor as it hits the cooler area near the item.

Answer 2

It would be called sublimation if it were a solid that was really cold and evaporation if it were a cold liquid.

When a substance, like liquified CO2, is placed in an environment that is above its liquification point (water is a liquid at room temperature until 100 degrees celsius) which is room temperature, it evaporates to its gas form. This process produces an evaporation of CO2 molecules to form bonds that are defined as being properties of a gas. During this transition you are able to see the CO2 as neither a gas or a liquid producing this "steam" effect. It is the same process when the substance is cold, but only happens to elements with specific qualities that allow them to skip the "melting" phase and skip right to evaporation.

Answer 3

I am glad that I learned to spell and use correct grammar in school!

The "smoke" is actually water vapor in the air getting cold and condensing into a small cloud. The air around the cold object loses heat to the object and the air becomes cooler. Cooler air cannot hold as much water vapor as hot air, so the excess water condenses to small drops of water. The drops of water reflect light and we see them as fog or "smoke."

Answer 4

you're talking about the vapor that comes off of a cold object.
it's water. what you see is simply water in the air condensing into tiny crystals. you can see the exact same effect in the cloud trails of jets flying overhead.

Answer 5

That...it's not "dat". It's spelled t-h-a-t.