Why do grease, cheese, butter, jam, etc., stick to smooth surfaces?

  1. Why do things like grease, cheese, butter, jam, etc. stick to smooth surfaces like a butter knife or teflon?
    What are the ways in which they would not stick and be allowed to release without being heated?
  2. jcsd
  3. Simon Bridge

    Simon Bridge 15,474
    Science Advisor
    Homework Helper
    Gold Member

    Welcome to PF;
    They stick to surfaces because the possess lots of a material property called "stickiness".
    Stickiness comes from electromagnetic attraction between the molecules of the substance and the molecules of the surface.

    You can reduce stickiness by coating the surface with something that counteracts the stickiness.
    The details depend on the exact surface and substance.

  4. Thank You Simon. This was indeed very helpful! :)
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