Blue-footed Boobies
          from the Galapagos


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Science Fun

Brian's Class Materials- FALL 2012 - SEYS 362

SEYS 362 Home

The Great Rubber Stopper Dilemma
  1. You are a Biology teacher who is trying to set up some apparatus that requires rubber stoppers, glass tubing and thermometers.  One of these is to demonstrate the difference between inhaled and exhaled air, while the other is an experiment to generate and collect carbon dioxide gas. 
  2. Some of the rubber stoppers that you need are old and have pieces of glass tubing stuck in them.  Some of the glass tubes are quite long and you need to remove them since you do not have any other stoppers of the right size and you want to do this experiment tomorrow. 
  3. How would you safely remove the glass tubing and insert thermometers and the correct tubing in the stoppers?
  4. Useful links and hints: