I need an answer by 10:00 PM
2007-03-06 16:16:55 · 3 answers · asked by Brian L 1 in Science & Mathematics ➔ Chemistry
Air pressure holds the water in a liquid form.
When you boil water, you increase the energy of the water molecules so they can escape the surface of the water against the air pressure.
If you reduce the air pressure, you reduce the energy needed for the water molecules to escape.
If there is no air, the water molecules can escape easily with their existing energy.
Steam is just gaseous water.
2007-03-06 16:30:36 · answer #1 · answered by gumtrees 3 · 0⤊ 0⤋
as for the second part of your question, you should be a bit more specific. come out of what?
As for the first part.
The definition of boiling point is the the point at with the air pressure become the same as the surrounding environment. I.E. the boling point of water is 100C AT sea level.
the lesser the air pressure, the less the number of water particles that need to evaporate.
2007-03-06 16:42:37 · answer #2 · answered by whatwouldyodado2006 4 · 0⤊ 0⤋
The surface tension gets reduced by lowered pressure, allowing the water to evaporate more easily.
2007-03-06 16:21:08 · answer #3 · answered by Anonymous · 0⤊ 1⤋