The salt is not actually making the ice colder. The internal portions of the ice are already below 0 degrees Celsius. The salt, or NaCl, gets in the way of the intermolecular forces of the water, allowing the ice to melt at lower temperatur...
http://wiki.answers.com/Q/Why_does_rock_salt_make_ice_c...
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Well. When they make ice cream , they get the ice and they get to cream and they mix it together. lol jk . The salt melts the warmer layer of the ice revealing the colder inner core.
http://wiki.answers.com/Q/Why_does_rock_salt_make_ice_c...
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My son is doing a 5th grade science fair project using ice cubes and salt water. We hypothesized that ice cubes would melt faster in salinated water but they melt slower. Is that because the salt lowers the temp of the water thereby making the water colder so the ice takes longer to melt? ... A mixture of rock salt, ice,
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antoine.frostburg.edu/chem/senese/101/solutions/faq/why...
antoine.frostburg.edu/chem/senese/101/solutions/faq/why-salt-cools-icewater.shtml
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On to the ice cream situation. We already know that the salt will melt the ice because of freezing point depression, but then what? The rock salt doesn't make the ICE colder, it makes the liquid water colder as the salt dissolves in it.
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www.madsci.org/posts/archives/Feb2003/1044209230.Ch.r.h...
www.madsci.org/posts/archives/Feb2003/1044209230.Ch.r.html
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Ice cannot form under this condition. At colder temperatures, the vapor pressure of ice drops more rapidly than that of water, until you get the vapor pressures of ... This means that finely ground table salt has more surface area than rock salt. When you dump the material on the ice, it interacts with the solid ice.
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www.madsci.org/posts/archives/mar97/853654424.Ch.r.html
www.madsci.org/posts/archives/mar97/853654424.Ch.r.html
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Discuss the fact that we put salt on the roads to help melt ice and prevent slippery conditions. (Salt lowers the freezing point of water.) You can also describe how this allows us to make ice colder by adding salt. ... 2. In a gallon size FREEZER baggie fill 1/2 way with ice, and add 6 T rock salt on top of ice. 3.
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www.teachers.net/lessons/posts/454.html
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Into a gallon-size ziploc baggie add four good handfuls of rock salt and eight good handfuls of crushed ice. Seal this baggie and gently shake the ice-salt mixture around until a good amount of water is formed. ... So, how do you make the ice colder? The trick is adding the salt. It is a well-known phenomenon to chemists that...
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membership.acs.org/C/Chicago/ChmShort/cs95.html
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wikiHow article about How to Make Ice Cream. ... you can also make your own rock salt from regular table salt ... Put the smaller coffee can in the big coffee can along with ice and rock salt. Seal the large can tightly.
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www.wikihow.com/Make-Ice-Cream
www.wikihow.com/Make-Ice-Cream
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A recipe for Shake and Make Ice Cream containing sugar milk half-and-half vanilla rock salt pint-size zipper bag gallon-size zipper bag. ... Fill the gallon-size plastic zipped bag half full with ice and rock salt, seal. Pour sugar, milk/ half-and ... This recipe from CDKitchen for Shake and Make Ice Cream serves/makes 1 pint...
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www.cdkitchen.com/recipes/recs/37/ShakeandMakeIceCream6...
www.cdkitchen.com/recipes/recs/37/ShakeandMakeIceCream65013.shtml
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