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Published byFrederick Wheeler Modified over 9 years ago
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Pressure (Pa) Length (cm) Pressure and volume experiment – Boyle’s Law
(mass +temperature constant) Draw apparatus. Pressure (Pa) Length (cm) As volume is directly proportional to length we can replace one with the other. List the things you need to do in order to get accurate results. Conclusion p p V(cm) 1/V in cm-1
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P1 V2 P2 V1 Boyle’s Law P 1/V For constant mass and temperature
Tutorial questions 21 to 25 Purple book Chp 3.3
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Temperature (oC) Pressure (Pa)
Pressure and temperature experiment (mass and volume constant) Draw apparatus. Temperature (oC) Pressure (Pa) p T -273oC List the things you need to do in order to get accurate results. Conclusion
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P1 T1 P2 T2 Bang!!! Pressure Law For constant mass and volume.
Temperature must be in Kelvin Bang!!! 0 oC = 273 K Kelvin to Celsius subtract 273 Celsius to Kelvin add 273 Tutorial Questions 26 to 32 Purple book Chp 3.4
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Temperature (k) Volume (m3)
Temperature and volume- Charles’ law(mass + pressure constant) Draw apparatus Temperature (k) Volume (m3) T(k) V(m3) List the things you need to do in order to get accurate results. Conclusion:
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V1 T1 V2 T2 Charles’ Law Constant mass and pressure
Temperature must be in Kelvin Tutorial questions 33 to 36 Purple book Chp 3.5
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Kinetic theory explanation of the gas laws for a fixed mass of gas
Constant V Increase T means higher average speed so particles hit the container walls more frequently and harder so pressure increases Decreasing V means the particles hit the walls more frequently so pressure increases Constant T Increase T means higher average speed so the volume must increase as the pressure stays constant, Constant p
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p1V1 p2V2 T1 T2 Combined Gas Equation Constant mass
Remember temperature must be in Kelvin. Tutorial questions 38 to 42 Finish SAQ questions Purple book Chp 3.6
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