Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Freezer Question

  1. May 8, 2004 #1
    Why would a freezer keep ice hard and cold.. while it cant keep ice cream
     
  2. jcsd
  3. May 8, 2004 #2
    I have very vague Chemistry knowledge. I'll give you something though until one of the brilliant people on the forums can more accurately explain it.

    Different things have different freezing points. These freezing points are based on what they are made of and other things. I'm guessing the thickness of the Ice Cream is one of the reasons it doesn't keep.
     
  4. May 8, 2004 #3

    Evo

    User Avatar

    Staff: Mentor

    Dooga, you're close. It's not the thickness, but the ingredients in ice cream, the fat, the sugar, etc...
     
  5. May 9, 2004 #4
    i always thought the reason why water was a great habitat was because it changed temps. slowly (took more energy to do it then on most substances).... =-P i guess it makes sence that strawberry ice cream with jugar is harder to freeze
    thanks
     
  6. May 9, 2004 #5
    Ok, so what's up with ice cream (or soy ice cream as the case may be) being all funky after it melts and then is re-frozen? It gets hard and icy and yucky. It's still the same ingredients, but it just doesn't freeze the same.
     
  7. May 9, 2004 #6

    Monique

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Icecream is a colloid, a mixture of water and fat. The fat in it stops it from freezing, that's why fat-free ice-cream doesn't really exist, and the ones who are low on fat aren't as creamy/tasty. The reason it becomes yucky after refreezing is that the two phases have started to separate. I wouldn't refreeze molten icecream anyway, bacteria love it and there is a chance you might get sick if you leave it out too long a second time.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Freezer Question
  1. Question (Replies: 2)

  2. Question (Replies: 9)

  3. A Question (Replies: 3)

  4. A Question (Replies: 20)

Loading...