I have a science project due soon and we have to keep a ice cube frozen.  Have any ideas about the question or have any comments on what i should do, please post.
206804
You cannot prevent it but you can minimize the convection by putting the ice cube to the lowest portion of the cooler.
343654
ICE..keep the ice on it for a while trust it works FAST
330836
Technically a process can require the addition or extraction/removal of heat ENERGY.\n\nI cannot off the top of my head recognize a chem formula any longer, but adding oxygen to any system is oxidation and generates its own heat.  Tehcnically even iron rusting generates heat, just a very small amount, since any metal "rusting" is just it oxidizing.  \n\nAs far as the ice cubes, simply the removal of heat will not cause water molecule to become ice crystals,  I apologize, but I forget why.  I remember an experiment I saw and tried.  In a very clean container, pour distilled water. Now cover that container with another container that does not touch the first.  (Like putting a big bowl over a smaller bowl with the distilled water.  The water stays liquid all the way down to around -20 C.  But if you damage the stablility of the bowl by say gently tapping the side, the water will then turn to a solid.\n\nSnow in clouds form when the water molucle has a dust mote or other item to cling to and begin forming the ice crystal which eventually gets heavy enough to possibly fall all the way to the ground.
6975
You could make a cloud chamber. It's a chamber that's saturated with alcohol vapor so when a cosmic ray or radioactive particle enters the chamber it leaves a trail of mist like when a plane leaves a vapor trail. It does use dry ice and isopropyl alcohol though. It's kind of complicated but would be worth it in the end.
439830
Put it in hot water.\n\nTo slow the process put it in ice cold water.
356060
idk my science teacher had us do the ice cream experiement but she was kinda a bad teacher and she never really explained why we did it. she gave us a worksheet asking questions on it but i had no idea what the answers were. also severaL people in my class threw up so im pretty sure we did it wrong. sorry
431293
Conservation of energy.\n\nCalculate the amount of heat stored in the 28ºC water using 0ºC as the starting point.  This energy must first melt the ice, for which you'll need to use the heat of fusion of water.  The remainder of the energy will warm up the entire amount of water.
525587
How about visiting this site:\n\nhttp://www.all-science-fair-projects.com/category0.html
278149
Ice it 20 minutes, let it warm up for 20 minutes. Do this once an hour for about 4 hours. Keep it elevated as well.
110815
You can use dry ice, which is solid frozen carbon dioxide, around the ice cube to keep it cool sot hat it will not melt.\nBecause of its particular characteristics, dry ice requires special precautions when handling. It is extremely cold and there should be no direct contact with skin.\nIt is constantly sublimating to carbon dioxide gas, so it cannot be stored in a sealed container as the pressure buildup will quickly cause the container to explode.\nWith these precautions, using dry ice is the most effective way of ensuring that the ice cube won't melt.
633753
Not with current freezing techniques. Too much cell damage. In the future I think that a process will be possible. Will it be ethical or moral in a rapidly overpopulating world will be the ultimate question.
49071
Excellent question. It is possible. I assume you mean the solid form of water (ice). It is theoretically possible. At this time finacially impossible. You would lose a percentage of the surface area of the ice by sublimation. How do you propose to freeze the water to begin with? How will you keep it frozen (remove absorbed heat energy)? Where will your source of water be? If you are taking water from Earth, how will you get it into space?
569042
U r asking for a science project.?\nI have an idea for the science project for chemistry side
256021
Get some glo-sticks.  When you snap them, you are providing activation energy.  When it gives off light it is a exothermic reaction...gives off energy.  Place one in hot water and one in ice water.  Compare the intensities of the light given off.  An increase in temperature speeds up the rate of the reaction, conversely reducing the temperature slows down the reaction rate.  That is why glo-sticks last longer if you put them in the freezer.  You can take it from here.  Fast, easy, cheap.  What more could you want?
498076
Adding sucrose to water is a VERY Endothermic reaction.  That means it requires heat to make the sucrose dissolve.  If you added a bunch of sucrose (sugar) to a glass of water at room temperature, the temperature of the water would drop and the solution would become cold as the sucrose dissolved.  \nSo, putting sucrose on ice should either do nothing since there is not enough energy to make it dissolve and interact with the water molecules ... or .... if there was enough energy, the sucrose would start to dissolve causing the ice to become even colder!  Adding sugar to water makes the temperature drop like a rock (This is fact), as for ice I would expect the same thing....that's only my opinion, I could be wrong.
41982
This seems like a homework problem...I'll give you a clue.\n\nsince, the ice is not changing temperature, all you need to do is figure out how much energy(per kilogram) it takes to ice into water...then multiply that number by 0.3.\n\nI'm guessing there will be a number in your book somewhere stateing the required energy to change 1 kilo of ice to water.
268019
You cannot make dry ice with water.  The freezing point of water is zero degrees centigrade, and the temperature of dry ice is -78 degrees centigrade.  Dry ice is normally formed by putting carbon dioxide under a great deal of pressure.  As a carbon source, it would not be cost effective at this time.  As for using dry ice as a power source, carbon dioxide is typically the oxidized carbon that is a by product of combustion, so I don't know how you would burn it.  Now, if you had a catalytic method to split CO2 to form elemental carbon and release O2, I think that would be a very marketable idea.