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Word Count: 990
Aim To find out the effect of temperature on the pressure of air1 Set up the apparatus as shown in the diagram1 Next take the readings of the pressure and temperature at intervals of 5C ending the experiment at 90C3 Repeat the experiment three times for a good average4 Record all results in the data logger and transfer them to a computer Avoid putting wires near the flames Do not spill water this will make the surface slippery Use the same equipment for each trial Have the same time interval in each trial Make sure the same amount of water is used in each trial Make sure the flask is put into the beaker at the same depth Use the same size beaker in each trial Try to keep the flame the same in each trialParticles of air are constantly moving around at different speeds If the air is trapped inside a container eg a flask like the one used in this experiment then the particles will hit the inside walls of the container with enough force to create pressure Sometimes the particles move around fast This means they have more kinetic energy They may have more kinetic energy because the air may be being heated or perhaps the air is more concentrated However if the air particles have more kinetic energy they will hit the container walls with a larger stronger force This then creates more pressure which is detected by the pressure sensor Physics Tom Duncan Pages 158-159When the air contained in the flask is heated the temperature rises and the molecules gain more kinetic energy This means the particles move around faster causing the average pressure to increase GCSE Physics Foulds Page 158In this experiment we kept the volume of air constant while the temperature is changed The three pressure laws one of which states that the pressure of a gas is directly proportional to its temperature Can be written asWhere P
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