dry ice + water = bubbles
why can it be like that? thanks`
2007-05-21 03:31:34 · 7 answers · asked by Priscilla P 1 in Food & Drink ➔ Other - Food & Drink
Dry Ice is the solid form of Carbon Dioxide (CO2), which when it becomes a certain temperature (under normal atmospheric pressure (1 atm) at −78.5 °C) it sublimates. Sublimation is the change from a solid directly to a gas with no intermediate liquid stage. Sublimation is a phase transition that occurs at temperatures and pressures below the triple point. The "triple point" is the temperature and pressure at which three phases (gas, liquid, and solid) of whatever substance may coexist in thermodynamic equilibrium.
To answer your question, dry ice creates bubbles when put into water because it sublimates (as mentioned above) under the water's surface, and because it therefore becomes a gas, it rises through the water (because gas is lighter than water) in the form of bubbles.
For more information, ask your science teacher, and check out these links:
http://en.wikipedia.org/wiki/Dry_ice#Dry_ice
http://en.wikipedia.org/wiki/Sublimation_%28chemistry%29
http://en.wikipedia.org/wiki/Triple_point
http://en.wikipedia.org/wiki/Atmosphere_%28unit%29
And by the way, there IS a form of liquid CO2. Read up about it through the links I've supplied.
("Liquid carbon dioxide forms only at pressures above 5.1 atm. Its triple point is -56.6 °C at 416.7 kPa and its critical point is 31.1 °C at 7821 kPa." This is a direct quote from wikipedia.org)
2007-05-21 04:08:31 · answer #1 · answered by hellbelle18 2 · 1⤊ 0⤋
No subject. I easily have carried out it. You sink the dry ice in water and as we communicate you notice the formation of Carbon Dioxide bubbles simply by sublimation of dry ice into water. Temperature does not low so rapid to break your mouth. Water gets wealthy in Carbon Dioxide. it particularly is all. good success! Cheers!
2016-12-29 16:59:08 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Dry ice is frozen carbon dioxide (CO2). Dry ice is a solid, but CO2 is a gas. (there is no liquid CO2). So when a solid goes to a gas, it's called sublimation. When solid CO2 is in water, it is frozen, and so it chills the water. As it sublimates, it releases CO2 gass bubles that actually carbonates the liquid, just like a carbonated soda.
If you put CO2 in fruit juice, it would chill and carbonate that, too.
HTH
2007-05-21 04:07:16 · answer #3 · answered by Sugar Pie 7 · 0⤊ 0⤋
dneprman had it right.
Dry ice, or frozen carbon dioxide, sublimates rather than melts.
At one atmosphere pressure, it goes directly from a solid to a gas. The water is just providing the heat needed for its phase change. If you place a solid block in air you can watch it go from the solid to the gas.
2007-05-21 06:19:05 · answer #4 · answered by modulo_function 7 · 0⤊ 0⤋
its easy dry ice=gas "trapped" in "ice" and when you put it in water and it melts you let the gas get out of the ice and make bubbles (well thats how i know it)
2007-05-21 03:42:21 · answer #5 · answered by O 3 · 0⤊ 0⤋
Dry ice is a frozen gas (CO2) and when you add water it melts and releases the gas.
2007-05-21 03:38:33 · answer #6 · answered by sensible_man 7 · 0⤊ 0⤋
because dry ice can. No seriously I think It's a carbon
dioxide thing that when it reaches its melting point it gasses
rather than turn to liquid.
2007-05-21 03:44:21 · answer #7 · answered by Anonymous · 1⤊ 0⤋