Unit 7 Thermal Physics Mini practical portfolio: Complete the the class lab activity (ideally during class time) and write it up in your lab notebook Grading Criteria shown to the right This list may be updated…

U7 Mini Practical #1 Balloon in a bottle Aim: Equipment: Method: Result / observation: Conclusion: Discuss the Physics involved Enquiry: how did you manage to get the balloon ‘fully sucked in?”

U7 Mini Practical #2 Manometer Aim: Measure the Gas pressure in HS 34 Equipment: Method: Result / observation: Conclusion: Discuss the Physics involved Enquiry: What would you expect if liquid mercury was used instead of water?

U7 Mini Practical #3 Explore Gas Kinetic Molecular Theory Click on the app via the weebly page and complete the worksheet. Complete and attach the worksheet to your lab notebook Aim: Investigate: a) The relationship between # of particles & Pressure b) The relationship between temperature & Pressure Task: collect data and complete the worksheet

U7 Mini Practical #4 Charles Law (variation of) & Can Crushing Aim: Investigate the relationship between Gas (air) temperature and volume by ‘Crushing a Can” Equipment & Method: Results & Observation: Enquiry: Any difference in using a narrow/long can or a wider/short can? What must occur for the can to be ‘well and truly’ crushed? Conclusion: Explain the Physics… Charles Law assumed Volume is directly proportional to Temperature. Is Charles Law being followed in this Can Crushing activity?

U7 Mini Practical #5 Boyle's Gas Law: Marshmallow Under Pressure Aim: Relate this demonstration to the definition of Boyle's Law – with constant Temperature, Pressure is inversely proportional to Volume Equipment & Method: Results & observation: What happened to the marshmallow when you pushed in the plunger? What happened when the plunger was pulled out? Conclusion: Did this demonstration verify Boyle’s Gas law?

U7 Mini Practical #6 Ball & Ring, Metal Bar expansion Aim: Investigate the conduction in metals Equipment & Method: Result / observation: Conclusion: Discuss the Physics involved Discuss two practical applications of metal expansion

U7 Mini Practical #7 Discuss the % difference in Energies Aim: Investigate Heat transfer of Water Discuss the % difference in Energies Result / observation: Conclusion: Enquiry: Repeat with an insulated calorimeter (or non insulated metal cup)

U7 Mini Practical #8 Aim: Show that water has a High Specific Heat Capacity by: Placing a balloon filled with water above a candle Trying to burn a paper cup – cup design on next slide Equipment & Method: Result / observation: Conclusion: (how do these experiments show that water has a high… Enquiry: how much water should you add to the balloon / paper cup? What would happen if you use a Bunsen burner instead of a candle? -Answer 1

Paper folding instructions:

U7 Mini Practical #9 Investigate metal conduction properties by Heating the metal spoke thingee… Aim: do both of the investigations above... Equipment: Method: Result / observation: Conclusion: Which metal had the fastest conduction How was this shown? Enquiry: is the amount of candle wax used to hold the match stick a variable that needs to be considered?

U7 Mini Practical #10 Observe crushed ice floating and positioned at the bottom of a test tube Aim: Show that water is a poor conductor Equipment & Method: Result / observation: Conclusion:

Please list your two lab partners for this practical U7 Mini Practical #11 Use Vernier digital temperature probes Aim: Determine the Thermal Heat capacity of a metal block Lab write-up requirements: Aim, Result / observation & Conclusion Please list your two lab partners for this practical Repeat for two different metals Result / observation: show calculations Conclusion: Discuss the cause of the % difference in specific Heat values calculated for your metals Enquiry: Why are digital temperature probes used – to they need to be calibrated?

Please list your two different lab partners (from practical #11) U7 Mini Practical #12 Aim: Transfer of heat by radiation, Investigate what type of surface emits radiation more efficiently. Equipment & Method: Use hot water from a kettle… Conclusion: Discuss your results Enquiry: Repeat your experiment with a different (lower) starting temperature – does a high starting temperature give better results? Or what would happen if you placed your cylinder / cup in a foam calorimeter? Use Vernier digital temperature probes If they are available Result / observation: Show a cooling curve graph (on graphing paper) plotting both set of data on the same graph

Please list your two different lab partners (from practical #11 & 12) U7 Mini Practical #13 Design an experiment to determine which ‘colour’ best absorbs radiation Include an Aim, Define all variables used (independent, dependent, control), Equipment, Method, Results / observations, Conclusion, an ‘Enquiry’ of some description. Hint: you are to use the following items: