Showing posts with label Do molecules attract?. Show all posts
Showing posts with label Do molecules attract?. Show all posts

Tuesday, April 19, 2011

Do molecules attract?

All matter is made up of molecules. 

Here's a simple activity to observe if molecules attract.


Materials

  • water
  • container for water (paper cup, etc.)
  • waxed paper
  • dropper
  • pencil





    Directions

    • Use the dropper to place a few drops of water on a piece of waxed paper.
    • Review the meaning of attract (to pull together).
    • Have students predict if the water molecules will attract each other.
    • Use a pencil to push 2 drops of water together. Do this slowly.
    • Observe how the water drops pull together to form one drop.
    • This attraction of molecules is what holds matter together.



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