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Wednesday, September 29, 2010

Super Fun Lab

An example of physical change


Before we did the super fun lab, we had to do a few pre-lab questions.  These questions were the following

1.Whats the difference between chemical and physical change?

2.Identify which of these are chemical changes or physical changes
a.burning wood  b.distillation of oil  c.formation of ice  d.leaves changing colour

3.List the properties of chemical change

4.What is the purpose of the glass square

An exmaple of a chemical change

     


 
See full size imageThen we had the super fun lab.  We had to get: 4 test tubes, a test tube rack, a glass square, 4 eye droppers, and these super cool looking goggles that totally felt comfortable on your head, in order to start the lab.  To start the lab, Ms. Chen gave everyone 4 unknown solutions later which we will label each A, B, C, and D.  Using the glass square we mixed all the unknown solutions together in every possible way (only two solutions were allowed to be combined) and recorded all the information on the changes we saw in a chart.  During the experiment we noticed many chemical and physical changes such as a change in colour and changing the liquid from a visibly clear mixture to a mirky and cloudy mixture.  After successfully conducting the experiments we proceeded to the next step, washing our hands, equipment, and our station.

    After that super fun lab we got a handout depicting on how we should do our labs.  On the sheet provided it showed us that we had to do a cover sheet a.k.a. a title page and a report write up.  Doesnt that sound like so much fun? yeah it is fun.  Then for the last 30 minutes of class, we had the time to start the super fun report write up.  Yay.  This was such a fun class!
 

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