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Chemical vs Physical change/property

  1. Apr 11, 2010 #1
    1. The problem statement, all variables and given/known data
    5. [1pt]
    For each of the following, indicate whether the statement describes a physical (P) or a chemical (C) change. Answer, in order, with a single string, e.g. CPCPC -- NO SPACES, NO PUNCTUATION.


    a) A grease spot is removed with cleaning fluid.
    b) Sodium chloride (salt) is obtained from salt water by evaporation of the water.
    c) Ski goggles become fogged.
    d) A snowball melts.
    e) Heated oil smokes and turns brown.

    3. The attempt at a solution
    For a) chemical to remove the stain
    b)physical
    c)physical
    d)physical
    e)chemical
     
  2. jcsd
  3. Apr 11, 2010 #2
    Nevermind I got it.
     
  4. Apr 13, 2010 #3

    chemisttree

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    What did you get for a?
     
  5. Apr 14, 2010 #4
    I got physical for A.
     
  6. Apr 14, 2010 #5

    chemisttree

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    Ooh-rah!
     
  7. Apr 14, 2010 #6
    Haha that one was tricky you must admit :)
     
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