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Video Summaries, Some videos have a PAUSE moment at which point the teacher or learner can choose to. pause the video and try to answer the question posed or calculate the answer to the problem. under discussion Once the video starts again the answer to the question or the right answer. to the calculation is given, Mindset suggests a number of ways to use the video lessons These include. Watch or show a lesson as an introduction to a lesson. Watch or show a lesson after a lesson as a summary or as a way of adding in some. interesting real life applications or practical aspects. Design a worksheet or set of questions about one video lesson Then ask learners to. watch a video related to the lesson and to complete the worksheet or questions either in. groups or individually, Worksheets and questions based on video lessons can be used as short assessments or. Ask learners to watch a particular video lesson for homework in the school library or on. the website depending on how the material is available as preparation for the next day s. lesson if desired learners can be given specific questions to answer in preparation for. the next day s lesson,1 Kinetic Theory, Models of the microscopic nature of the phases of water are simulated Explanations of. gas temperature and pressure are given in terms of microscopic understanding and. kinetic theory,2 Boyle s Law Concepts, An introduction to Boyle s Law that focuses development of conceptual understanding by.

use of a simulation and inverse proportion patterns in simplified data. 3 Boyle s Law Practical, We observe learners performing and processing the results from three variations of. Boyles Law demonstrations in the laboratory,4 Gay Lussac s Law Practical. We observe learners performing and discussing the results from a laboratory. demonstration about the effect of temperature on pressure for a trapped gas at constant. volume Questions are raised which will be answered in Lesson 5. 5 Gay Lussac s Law Concepts, In this lesson we look for patterns in temperature pressure data and derive and use the. equation We explain why pressure is directly proportional to temperature in. Kelvin but not in degrees Celsius,6 Charles Law, We look for patterns in temperature volume data and derive and use the equation. 7 Gas Equations, We derive the equation We reason that pressure must be directly proportional.

to amount of gas n and so adjust the gas equation to From this we derive the. universal gas equation PV nRT and deduce that the universal gas constant R has a. value of 8 3,8 Universal Gas Equation, We derive the units of the universal gas constant R and practise solving problems with. the universal gas equation PV nRT,9 Real and Ideal Gases. The concept of an ideal gas is explained differences between real and ideal gases are. named and explained on a microscopic level,Resource Material. http phet colorado edu en simulati The PhET simulation introduced in. 1 Kinetic Theory on states of matter basics this lesson. http www slideshare net AngelaSt A Slideshare presentation containing. ott kinetic theory 29681801 the visuals used in this lesson. http socratic org chemistry the Socratic Chemistry Videos about. behavior of gases kinetic theory of Kinetic Theory. http www slideshare net AngelaSt A Slideshare presentation containing. 2 Boyle s Law Concepts ott boyles law 29731900 the visuals used in this lesson. http phet colorado edu en simulati A PhET simulation about gas. on gas properties properties, http www youtube com watch v Z Tyler DeWitt teaches about Boyle s. oGtVVu3ymQ Law, http www youtube com watch v Youtube video Cape Town Science.

3 Boyle s Law Practical OKTGTlZfM1o Centre practical experiment Boyle s. http www nuffieldfoundation org pr Instructions on how to demonstrate. actical physics boyles law Boyle s law in the laboratory. http www youtube com watch v J Youtube video Boyle s Law Cool. ZSajBakGK4 Science Experiment, http www phs d211 org science s A pdf with illustrated notes worked. 4 Gay Lussac s Law mithcw Chemistry 20332 Quarter examples and questions. Practical 204 20Unit 201 3 20Gay 20,Lussac s 20Law 20and 20temp. erature pdf, http www youtube com watch v A You Tube movie showing a simple. oZBp4wxUjE demonstration of Gay Lussac s Law,using an egg. http www slideshare net AngelaSt A Slideshare presentation containing. 5 Gay Lussac s Law ott temperatures effect on gas the visuals used in this lesson. Concepts pressure, http socratic org chemistry the Socratic Chemistry Absolute Zero.

behavior of gases kelvin,temperatures and absolute zero. http www youtube com watch v o Tyler DeWitt teaches about. 6 Charles Law IfFoiwRCVE Charles s Law, http www wikihow com Demonstra Instructions on how to demonstrate. te Charles s Law Charles s Law using a balloon, http www phs d211 org science s A pdf with illustrated notes and. mithcw Chemistry 20332 Quarter worked examples,204 20Unit 201 4 20Charles. 20Law 20and 20Volume pdf, http socratic org chemistry the Socratic Chemistry Gas Laws.

7 Gas Equations behavior of gases gas laws, http www slideshare net AngelaSt A SlideShare presentation with the. ott gas equations visuals used in this lesson and in. http socratic org chemistry the Socratic Chemistry Ideal Gas Law. 8 Universal Gas Equation behavior of gases ideal gas law. https www khanacademy org scie Khan Academy Ideal gas equation. nce chemistry ideal gas,laws v ideal gas equation pv nrt. http www slideshare net AngelaSt A SlideShare presentation with the. 9 Real and Ideal Gases ott real and ideal gases visuals used in this lesson. https everythingscience co za gra Siyavula Gr 11 Everything Science. de 11 07 ideal gases 07 ideal Ideal gases,gases 02 cnxmlplus. Question 1, A helium balloon has a volume of 5 dm3 when the atmospheric pressure is 100 kPa When. the balloon is released it rises and expands to 7 5 dm3. 1 1 Calculate the pressure of the gas inside the balloon after it has risen. 1 2 Explain why the pressure and volume change as the balloon rises in terms of the kinetic. molecular theory, 1 3 How are volume and pressure related to one another Give your answer.

1 1 3 in words,1 1 4 in a mathematical expression,1 1 5 in a sketch graph. 1 1 6 Name the law which describes the relationship between a gas s pressure and its. Question 2, A trapped gas has volume V pressure P and temperature in Kelvin T. 2 1 If the gas s volume increases by 25 how will the gas s pressure change. 2 2 If the gas s volume is changed to V and its temperature to 2T what will the gas s. pressure be, 2 3 If the gas s volume is changed to 4 V and its pressure to V what will its temperature. Question 3, A 2 cm3 gas bubble rises from the bottom of the sea where the pressure is 275 kPa and the. temperature 5 C The bubble reaches the surface where the temperature is 28 C and. 3 1 What happens to the volume as the bubble as it rises. 3 2 Explain your answer in terms of the kinetic molecular theory. 3 3 Calculate the volume of the bubble at the surface of the sea. 3 4 Explain why you did not need to convert the volume of 2 cm3 into the SI unit m3 to. answer 3 3 but if you had used the universal gas equation you would have had to. convert to m3, 3 5 Explain why you had to convert temperature into the SI unit Kelvin to answer 3 3.

Question 4, Calculate the volume of 132 g of CO2 at a pressure of 9 x 105 Pa and at a temperature of. Task Answers,Question 1,1 1 P1V1 P2V2,100 5 P2 7 5. P2 66 67 kPa, 1 2 The atmospheric pressure decreases as the balloon rises therefore the helium gas expands. Atmospheric pressure decreases therefore there are fewer collisions with the air molecules and. the walls of the balloon The fewer collisions there are the less force the molecules exert on the. walls of the balloon This decreases the pressure the helium exerts until the pressure it exerts on. the inside of the balloon equals the pressure the atmosphere exerts on the outside of the balloon. At that point the balloon stops expanding since equilibrium has been reached. 1 3 1 Volume is inversely proportional to pressure and pressure is inversely proportional to. 1 4 Boyle s Law,Question 2,2 1 The gas s pressure decreases by 25. 2 2 The pressure changes to 4P,2 3 The temperature remains unchanged at T.

Question 3,3 1 Its volume will increase, 3 2 As the gas s temperature increases the average kinetic energy of the gas molecules increases. so the gas molecules move faster on average Therefore the molecules collide with the sides of. the bubble the surrounding water more frequently expanding the volume Also as the pressure. exerted on the bubble by the surrounding water decreases the bubble s volume increases. V2 5 89 cm, 3 4 The proportionality constant R is in SI units and so all units should be in SI units when using the. universal gas equation We solved this question proportionally between two states so their. volumes must just have the same unit as one another but this need not be the SI unit. 3 5 Temperature is only proportional to pressure and volume if it is in Kelvin therefore proportional. reasoning as is involved in this equation will not work if temperature is in degrees Celsius. Question 4,n 132 g CO2 x 3 mol,V 0 0083 m,Acknowledgements. Mindset Learn Executive Head Dylan Busa,Content Manager Classroom Resources Jenny Lamont. Content Coordinator Classroom Resources Helen Robertson. Content Administrator Agness Munthali,Content Developer Angela Stott.

Content Reviewers Jessica Davies,Liz Harris,Produced for Mindset Learn by Traffic. Facilities Coordinator Cezanne Scheepers,Production Manager Belinda Renney. Director Alriette Gibbs,Editor Nonhlanhla Nxumalo,Presenter Banji Longwe. Studio Crew Abram Tjale,James Tselapedi,Wilson Mthembu. Graphics Wayne Sanderson, http upload wikimedia org wikipedia commons f fc Water droplet blue bg05 jpg.

http upload wikimedia org wikipedia commons 9 9e Ice cubes openphoto jpg. http upload wikimedia org wikipedia commons thumb c c7 Water molecule 2 svg 2000px Water molecule 2 svg png. http upload wikimedia org wikipedia commons 0 03 Liquid water and ice png. http upload wikimedia org wikipedia commons b b5 Cumulus clouds in fair weather jpeg. http upload wikimedia org wikipedia commons 1 1a Dszpics1 jpg. http www sanhujinka org wp content uploads 2013 05 nasa space shuttle in space jpg. http upload wikimedia org wikipedia commons 8 82 A FACTORY VIENNA Dr Murali Mohan Gurram 282 29 jpg. http upload wikimedia org wikipedia commons 2 2b Cylinder 2Cgas 2C LPG 2Cbharat 2CTamil Nadu457 jpeg. http upload wikimedia org wikipedia commons 6 69 Olla a presion jpg. http images cdn fotopedia com flickr 3116901003 original jpg. http upload wikimedia org wikipedia commons 6 65 Aran cardigan jpg. http upload wikimedia org wikipedia commons 1 16 Melting icecubes gif. http upload wikimedia org wikipedia commons b b7 Sandals walking jpg. This resource is licensed under a Attribution Share Alike 2 5 South Africa licence. When using this resource please attribute Mindset as indicated. 3 2 Explain your answer in terms of the kinetic molecular theory 3 3 Calculate the volume of the bubble at the surface of the sea 3 4 3Explain why you did not need to convert the volume of 2 cm3 into the SI unit m to answer 3 3 but if you had used the universal gas equation you would have had to convert to m3

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