Wednesday, November 9, 2011

5.13

5.13 Starter
·         
How can you fit a giraffe, 2 dogs and a swan into a standard laboratory beaker?!

5.13 Starter 2

·         Use particle theory to explain why the gas in the balloon contracts

 

Explanation

·         The temperature of the gas inside the balloon decreases so the average speed of the particles decreases
·         Consequently the gas particles collide with the walls of the balloon with less force and less collisions per second
·         Because the walls of the container are flexible, the  volume decreases

5.13 Charles' law
28 October 2011
11:10
·         5.13 understand that there is an absolute zero of temperature which is –273oC

 

 

<<Charles' law interactive experiment.swf>>

 

Open the Charles' law interactive experiment

·         Adjust the temperature
·         What’s the relationship between temperature and volume?
·         Plot a graph of V against T
·         Take a screen shot of the graph

 

5.13 results and conclusion
28 October 2011
11:10

Image001

Image002

Conclusion

·         Volume is directly proportional to absolute (Kelvin) temperature
·         V Î± T

Charles' law interactive experiment.swf Download this file

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