why is rain water not salty?

Answer 1

Its just the same as when you boil salt water in a pan, the salt is left behind. When water evaporates from the sea to form clouds, the salt is left behind.

Answer 2

Rainwater comes from clouds which are made up of water droplets. These accumulate in the atmosphere when conditions are right to allow the evaporation of water from the seas, rivers, lakes, land and from the transpiration of plants. Only pure water molecules evaporate to form clouds, so only pure water falls as rain. On the way down (and whilst in clouds), the rain does pick up pollutants and gases from the atmosphere (including carbon dioxide which is why rainwater is slightly acidic), so rain water is tthen not so pure.
Salt is water is caused by rainwater running over, or percolating through soluble rocks and dissolving minerals, which is why seas are salty.

Answer 3

Sea water is salty because of the earth that it rests on. salt in the earth. When this water is evaporated the salt is left behind in crystals. The rain which comes back to earth does not contain the sea salt left behind before evaporation

Answer 4

Salt water is caused by particales of sodium chloride [salt] dissolving in water [hydrogen(2) oxygen(1)]

To cause rain, water must evaporate and rise into the sky as steam. Water evaporates and leaves the salt behind. Thus pure water rises into the sky.

Although salt does not rise with the evaporated water; the water which falls as rain is not pure as it is contaminated by pollution on it's way back down. Drinking rain-water in rural areas may be safe [stress may] but in a large city like London or New York or Tokyo i would not advise it!

Answer 5

Rain water is water that has evaporated into the earth's atmosphere and comes back down as rain.

it is evaporated as STEAM - and in this process, all other particles (like salt) are left behind because they don't change to a gaseous form at the same temperature as water. So it is left behind.

This steam that is absorbed into the atmosphere can then be cooled back down, forming clouds and rain droplets that return to earth.

It's the water cycle - and without it, we'd be doomed.

Answer 6

*hits head on keyboard* when water vapour (water in the air) evaporates it leaves behind minerals and eveything else within the body of water. thus the water vapour is almost pure water (it picks up other chemicals in the air) the salt is left behind. this water vapour then condensates into clouds and falls as rain. with the salt and whatever was origonally in it left behind. fill a dish half with salt and half with water; leave it to evaporate and you will see that there is exactly the same amount of salt in the dish that you began with. in the hydrological (rain and clouds and stuff) cycle this occours on a much larger scale.

Answer 7

When water is evapourated into the air the salt stays behind because it does not turn into gas under these conditions.
Rain is like distilled water, any impurities in rain are due to thembecoming dissolved in the water after it begins to fall. (from suspended particles in the air or run off etc)

Answer 8

When sea water evapourates the temperature is too low to vapourise the salt. At a guess, the temp would have to be in exess of 1000C to vapourise salt(as it's ions). Sea water evaps. at temps below 10C so only the water mols. can escape to the sky!

Answer 9

As sea water evaporates, the salt stays behind.

Answer 10

thats coz in the process of evaporation, salts are left behind
coz salts are denser than water
plus, u can't evaporate salt
i think