Why does a bottle of cold water have water droplets on it?

Question

Why does a bottle of cold water have water droplets on it? Is it evaporation or condenstion or both? Why?

Answer 1

The air around the bottle condenses onto it because of the difference in temperature between the air and the surface of the bottle.

Answer 2

The outside temperature, is warmer than the cold water inside of the bottle.
This causes condensation on the outside of the bottle, hence the formation of droplets.
If the bottle is sealed, it cannot evaporate.
If the bottle was an open bottle, of cold water, condensation would still form, due to temperature difference, and evaporation would be into the atmosphere.

Answer 3

The air around a bottle of cold water become condensed due to the effect of the cold water... Since condensed air can't stay long on a normal room temperature they only form where constant cold air comes... It's like formation of rain only in the smallest scale...

Answer 4

In a humid environment - where the surface temperature of your cold bottle is below the dewpoint of the air in the room, water will condense from the atmosphere onto the bottle - as the bottle warms (convective heat transfer from the room, and the condensing water transfers energy to the bottle as it undergoes the phase change from vapor to liquid) it will rise above the dewpoint, and cease to condense. If you live in Las Vegas, the dew point can be very low (below freezing) - and you may not have enough water vapor in the air to condense!), where if you live in Houston in the summer, with 95% humidity, and 95F temperatures, a condensing effect will occur at room temperature - fogging your glasses when you go outside!)....

Answer 5

Because it cools the atmospheric moisture around it. The latter reaches it dew point and condenses to form water droplets. Nothing to do with evaporation.

Answer 6

Condensation. It's caused by the interaction of warm air on the outside, colliding with the cold water inside the bottle.

It's not evaporation because the water inside is chilled and hasn't reached its traditional boiling point.

Answer 7

It is because the water in the bottle, or can, or even a solid object, is cooler than the the dew point (the temperature in which the current amount of humidity (water in its gaseous state) condenses). so if the dew point is, 56 degrees, any surface that is cooler than 56 degrees will be able to condense water vapor into liquid water.

Answer 8

only condensation.
thats because of the difference in the temperature of the bottle of cold water and the air surrounding it.
water vapour condenses and become water droplets when equilibrium is reached.
this is called latent heat.

Answer 9

Condensation
outside air let moisture stick on bottle due to temprature variation.