Why does dew form on a cold soft drink can?

Answer 1

Condensation forms on any cold container because heat is transferred from water vapour in the air near the container to it, which warms the container and cools the vapour. The vapour turns back to liquid and condenses on the container surface.

Answer 2

Well, honey, when a cold soft drink can hangs out in a warm, humid environment, the air around it gets cozy and starts to condense on the cool surface of the can. This condensation is what we call dew, and it's just nature's way of saying, "Hey there, I see you trying to stay cool, let me give you a little extra moisture to keep you company." So next time you see dew on your drink, just thank Mother Nature for looking out for you.