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Drano chemistry lab

  1. Mar 4, 2007 #1
    can n e one help me with my lab???? :confused: we had to mix
    a)drano (a substance used to unclog drains) with water
    b) ammonium chloride with water

    can you tell me if these are chemical or physical changes and whyyy?? THANKZZ A BUNCH!!
     
  2. jcsd
  3. Mar 4, 2007 #2

    cristo

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    Staff Emeritus
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    Since this is homework, you need to show us some work before we can help you. What do you think?
     
  4. Mar 5, 2007 #3
    ohh alriight... I actually figured it out after based on my observations
     
  5. Mar 5, 2007 #4
    BUT umm..are all exothermic reactions chemical changes? or can they be physical changes aswell...since they relase heat?
     
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