How does Salt Rock and Ice make icecream?

Question

please tell me how the salt and ice together can make it freeze, instead of just ice......thanx

Answer 1

All good answers so far....It's the same concept as spreading salt on the roads. It has to do with valence electrons and ionic bonding as well.
The reaction absorbs heat, cooling down the container making the "iced" cream. It's kind of like air condition, except A/C uses a change from liguid to vapor and this uses solid to liquid.
If you just packed it in ice, with enough time, it would freeze, but the salt speeds up the process.
And just like on the roads, if you used calcium chloride, you would get the reaction much faster.

Answer 2

I think the salt lowers the temperature at which water will freeze. This allows the temperature of the water around the outside of the ice cream container to go lower before freezing solid.

Answer 3

Colligative properties are the properties of solutions which depend on the number/concentration of solute particles but not on their nature or chemical properties.Eexamples of colligative properties includes, boiling point elevation, vapor pressure lowering, osmotic pressure and freezing point depression.

Your question deals mainly with one of those colligative properties namely, freezing point depression. The entropy effects of the added solute (rock salt on this case) disturbs the equilibrium at the freezing point. Because of this, the entropy effects cause the freezing point to be depressed. Hence the freezing point is further lowered, this would entail a colder environment and a better freezing environment as well. That is why rock salt is added into ice to further lower its temperature and to make it easier for ice cream to harden and form.

Hope this helps. =)

Answer 4

Salt makes the ice melt faster and lowers its temperature to the freezing point of salt water which is far below the freezing point of pure water.

Answer 5

It depresses the freezing point of the salt/ice mixture below the freezing point of the liquid ice cream mixture

Answer 6

the salt lowers the temperature of the ice, making it colder and helping teh ice cream freeze.

Answer 7

sounds like a private determination - yet I nevertheless does not use table salt given which you do no longer go with "crystally" ice cream. it would be like freezer burned ice cream. table vs Rock Salt for Ice Cream 5/20/2003 call David E. G. prestige educator age 50s question - Rock salt is used for making ice cream. we've got here upon table salt relatively lowers the temperature of ice water quite a few tiers greater. Why is table salt no longer used? -------------------- David, it relatively works fairly nicely by way of fact it relatively is greater soluble than rock salt. it incredibly isn't any longer used plenty by way of fact it expenses fairly so plenty greater desirable than rock salt. Regards, ProfHoff 669 ======================================... No reason. It "works" greater effectual by way of fact table salt is a plenty finer grain and so it is composed of equilibrium with the ice/water swifter. the only "ice cream maker's" reason must be which you do no longer go with the temperature to get too low. there is in all likelihood some differential in fee, yet the two forms of salt are so low value for living house-made ice cream whilst in comparison with the different components, that isn't an substantial attention. Vince Calder ======================================... i'm no longer via any means an authority on making ice cream, yet i'm prepared to make a gamble. no remember if it relatively is real that table salt lowers the temperature much greater, the water ought to freeze swifter and create ice crystals interior the ice cream. I doubt maximum individuals go with gritty ice cream. you need to attempt an test--attempt one batch with table salt and one batch with rock salt and notice what happens. Pat Rowe ======================================... Rock salt is greater much less high priced. some ice cream makers do propose utilising table salt, so there is obviously no operational reason to no longer use it. yet whilst rock salt will suffice, utilising table salt in an ice cream freezer is like washing your floor with distilled water - too plenty extra value for no longer plenty extra income. Richard E. Barrans Jr., Ph.D. PG learn beginning, Darien, Illinois

Answer 8

It's called freezing point depression.

Answer 9

pshhh you should know that! hahah you lil retard! no im jk! well i hope i gave you enough info! if you answer my question i will give you ten points! yay bug fun! ttytomorrow! bye!
lil.....person...big person....lol