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Because the molecules in the hot air are more spread out, allowing water to easily form within the gaps of the molecules.
Cold air is more dense and does not allow water to form easily between the molecules.
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What is happening when water droplets appear on the outside of a cold glass of water?
The air has moisture (water dissolved in the air). The amount of air that can be carried in the air depends on the temperature. Warmer air can hold more water in it than cold air. When the cold glass is exposed to the air, the air touching the glass gets cold, is no longer able to hold as much water and the water in the air condenses (comes out of solution) on to the outside of the glass.
How does the water on the outside of a cold glass get there?
There is water in the form of water vapor, sort of like steam, in the air. But, the amount of water the air can hold depends on the temperature of the air. The hotter it is the more water it can hold. But, when the air touches the side of a cold drink glass the temperature at that place drops dramatically and the air can't hold nearly as much water as it has been, so the water comes out of the air (condenses) onto the glass.
What happens to the energy used to evaporate water?
It goes into the molecules of water vapour, which are more energetic than those of liquid water
Why rate of evaporation decreases with increase in humidity?
Because (in simple terms) there is more water, in vapour form, in the air so it is harder for even more to evaporate compaired to when there is no vapour - humidity - in the air.
Why is there a limit on the amount of water vapor the air can hold?
It takes a lot of energy to turn water into water vapor. The amount of energy that the water gains to turn into water vapor begins to be transferred into the surrounding air. If the air is willing to take on more energy the water vapor condenses quicker. This is why hot air will hold more water vapor than cold air.
Can warm air hold less water vapor than cold air?
no, warm air holds more water vapour than cold air
Does cold air hold more than warm air?
No. Warm air is capable of holding much more water vapour than cold air.
What is occurring when you can see your breath on cold days?
The air that you exhale contains water vapour. When you exhale during a cold day, the relative humidity increases. Relative humidity is actually the percentage of the amount of water vapour in the air.(the maximum amount of water vapour that the air can hold at that temperature) The colder the air, the less water vapour it can carry. When exhaled, air mixes with cold air, the temperature of the exhaled air drops, but there is more water vapour. When the air becomes saturated, (relative humidity is 100%), the extra water vapour will condense, allowing you to see your breathe on cold days.
The excretory system why do you see your breath on a cold day?
The air that you exhale contains water vapour. When you exhale during a cold day, the relative humidity increases. Relative humidity is actually the percentage of the amount of water vapour in the air. (the maximum amount of water vapour that the air can hold at that temperature) The colder the air, the less water vapour it can carry. When exhaled, air mixes with cold air, the temperature of the exhaled air drops, but there is more water vapour. When the air becomes saturated, (relative humidity is 100%), the extra water vapour will condense, allowing you to see your breathe on cold days.
Can hot air or cold air hold more water?
warm air hold more water vapor...unless it doesnt like sandwiches between its toes at 5 o'clock in the after noon
What is it called when air can hold no more water vapour?
When air can hold no more water vapor, it is said to be Saturated. It has a Relative Humidity of 100%
When air is saturated it cannot hold?
… any more water vapour.
To condense is a physical or chemical change?
Condensation can be a physical process whereby a vapour becomes a liquid e.g. the 'steam' (water vapour) from your shower condenses on the bathroom window and runs down as water to form a puddle on the windowsill. Warm air can hold more water than cold air - the warm, vapour-laden air is cooled as it comes in contact with the colder glass and can hold less vapour so the surplus appears as water on the glass. In chemistry there are 'condensation reactions'
What is the maximum amount in grams of water vapour possible in one cubic meter of atmosphere at sea level. will the parcel hold more water if it is hot or cooler?
It will hold more water if it is warmer.
How do you make water vapor come out of air?
Warmer air can hold a lot more water in vapour form than cold air. You can extract the water by providing a cold surface for it to condense onto, like when water droplets form on a cold glass of water, in a warm humid room. This is how air conditioners work, the air temperature is brought right down to condense the water vapour out of the air, then the less humid cold air is sometimes warmed up again to give warm but dry air.
What increases airs' ability to hold water vapour?
Temperature is the main variant of air's ability to hold moisture. The warmer the air the more water it can hold without condensation.
What increases the ability of air to hold water vapor?
A rise in temperature allows the air to absorb more water vapour.
