Float or Sink - Using Models of Atoms

Aluminum is less dense than iron.  Choose the diagram that correctly shows aluminum to be less dense than iron. 

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If you look closely at the diagram, you should be able to tell which items will sink and which will float.  You do not need any more information than just looking at the spacing of the particles in the water and in the objects.  Choose all of the items you think will FLOAT.

• Copper

• Wood

• Rubber

• Cork

Will this much smaller, much lighter piece of coper sink or float?

• Sink

• Float

We just saw that glass objects will sink and foam will float.  Which diagram below has the glass and foam correctly diagramed?

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• Float

• Sink