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Relative humidity is the ratio of the amount of water air is holding to the amount of water it can hold. The warmer air is, the more water it can hold. Therefore, as air temperature drops, relative humidity increases, even when no additional moisture is being added to the air. If the temperature continues to drop after the relative humidity reaches 100%, the excess moisture gets condensed out of the air. That is why dew forms during the night. The cold cup of water cools the air around it by conduction, so that cooler layer of air in contact with the cup loses its ability to hold its moisture, and the excess moisture condenses onto the cup.
Wiki User
∙ 9y ago
Wiki User
∙ 10y agoIt doesn't stick when it is hot.
But when it is cold water condenses on it.
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Can you be at risk if you put hot water in a plastic cup and then freeze it?
The cup may be damaged.
Would a sugar cube melt fast in a cold cup of water?
No, it wouldn't. a sugar cube would melt a lot faster in a cup of Hot water. the hot water helps it desolve more evenly than cold water.
What cup is easier to hold with hot water a plastic one or metal?
a styrofoam cup. i tried it on my science project
Marty poured hot water into his cup and then let it cool off. what was happening to the paticiles of matter in the cup as the water cooled off?
the water molecules are getting cold
What to use to test hot water?
It depends on how hot I want it to be. If I want regular out-of-the-tap hot water, I stick my finger in it quickly and then shout and wave my hand about when it's actually hot. If I need boiling water to be a certain temperature, I measure the temperature with a candying thermometer.
Why does water not form on the outside of a cup when you have a hot drink?
Hot cup evaporates water while cold water condenses water .
What type of cup keeps hot water hot the longest?
A metal cup
How are the water molecules positioned in the hot cup?
The molecules in a cup of hot water are spaced farther away from eachother than the molecules in a cold cup of water.
Why a glass of ice water often has water droplets which form on the outside while a hot cup of tea or soup does not?
the main reason is condensation of water vapour in the air to water droplets
How do you keep hot water hot in a cup?
try covering the glass, so the heat particles stay inside the cup, and the hot water stays hot.
Can a metal cup keep water hot for long?
No, It doesn't. If you want to keep hot water hot for a longer time use a polystirene cup.
Why is a mug or tea cup not broken when it contains hot water?
If it were broken, no hot water would be contained in the mug or tea cup.
If i use a thermometer what will be the temperature in the plastic cup with hot water?
That depends on how hot the water is in the cup. Use the thermometer to measure it and see.
Does baking soda dissolve more in a cup of hot or cold water?
hot water
What is good for bloating?
A hot-water bottle and a cup of hot water with a slice of lemon.
What happens if you take 2 styrofoam cups and fill one with cold water and one with hot water and drop a glow stick in each?
The glow stick in the cold water will not glow as bright as the glow stick in the hot water because when you cool the glow stick down, the chemical process will slow down. The glow stick in the hot water will glow brighter but for a shorter period of time.
How does the temperature of the water change?
it changes the temp. by the temperature outside,like if its cold out the water will be cold and if it's hot outside than the water will be hot
