How do freeze something without lower the temp?
2006-09-08 09:55:13 · 21 answers · asked by Leelee 2 in Science & Mathematics ➔ Chemistry
ok...I know this may seem farfetched but my chem. teacher said it is possible.We were doing experiments on how to make water boil while using ice...
2006-09-08 10:02:14 · update #1
well
there are these things in chemistry called colligative properties, properties that change when you mix chemicals, freezing point is one of these properties, you can mix two chemicals so that the mixture has a freezing point at or higher than room temp - and voila you have frozen something without freezing it
P.S. I notice ppl saying stuff about pressure - not lowering the pressure, but raising it would help you. solids form at high pressures and low temperatures, however, without changing the temperature, you cannot change a liquid into a solid no matter how much pressure you put on it. so if youre working with a gas then you can raise the pressure (this relates to the water thing youre talking about - youre trying to get the solid ice to sublimate that is change from solid straight to gas, you can do this by putting the solid into the conditions that make it a gas , high temp, lower pressure)
2006-09-08 10:04:17 · answer #1 · answered by Alex P 2 · 1⤊ 0⤋
Sure. That is easy to do.
All you do is reduce the atmospheric pressure until ice water starts to boil.
This is why in outer space a person cannot take off their space suit as their blood would immediately start to boil into the vacuum there.
2006-09-08 13:40:39 · answer #2 · answered by Alan Turing 5 · 0⤊ 0⤋
Honey, freezing involves lowering the temperature that the body you want to freeze gets in contact with. So it's IMPOSSIBLE.
2006-09-08 09:58:30 · answer #3 · answered by Domnul Andrei 2 · 0⤊ 0⤋
Lower the pressure surrounding it. Kind of like the opposite of a pressure cooker.
2006-09-08 10:00:37 · answer #4 · answered by Justin 2 · 0⤊ 0⤋
LOL. Thats a very contradictory question, and I have no idea what on earth you are trying to freeze (liquid, solid) Dry ice might be what you are looking for...try rephrasing the question.
2006-09-08 09:57:22 · answer #5 · answered by b17jo 3 · 0⤊ 1⤋
well u can try to do fast freeze like the do with frozen products maybe or dry ice
2006-09-08 09:59:07 · answer #6 · answered by knowssignlanguage 6 · 0⤊ 0⤋
Look up the triple point and change something besides the temperature.
2006-09-08 10:16:37 · answer #7 · answered by Dennis K 4 · 0⤊ 0⤋
has to do with pressure. they're directly related. i know if you pressurize dry ice, it will become a liquid. it's frozen at room temp.
2006-09-08 10:01:21 · answer #8 · answered by Nikki H. the wizard 3 · 0⤊ 0⤋
hmmm tough question...but by freeze do you mean solidfy?....too make solid....?....baking works, heating an item such as clay turns it solid, while heating water turns it too a gas....need more specifics before a true answer can be givin
2006-09-08 09:58:25 · answer #9 · answered by brotherwolf 2 · 0⤊ 0⤋
Change the pressure. Like raise it or something.
2006-09-08 09:57:54 · answer #10 · answered by crage_ralius 3 · 1⤊ 0⤋