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QR Challenge: 4th Year solids, liquids, gases

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. What is the mass of a piece of magnesium ribbon (density 1.74 g/cm3) with a volume of 0.1 cm3. 1.74 x 0.1 =0.174 g
2. What weight must a table have to give a pressure of 5000 N/m2 with four legs totalling an area of 0.01 m2. 0.01 x 5000 = 50 N
3. What is the change in pressure when a scuba diver that rises from 10 m below the surface to 2 m below the surface in salt water, density 1027 kg/m3. 1027 x 10 x 8 = 82,160 N/m2
4. Convert to Kelvin: Body temperature - 37°C 310 K
5. Convert to degrees Celsius 323 K 50 °C
6. What is the final pressure when a sealed container of gas at 350 kPa is heated from 0°C to 100°C. (350 x 373)/273 = 478 kPa
7. Calculate the initial pressure when a sealed container of gas at 200 K is heated to 300 K. The final pressure was 150 kPa. 150 x 200)/300 = 100 kPa
8. Calculate the final pressure when a sealed container of gas at 101,000 Pa expands from a volume of 0.5 m3 to 0.8 m3. (101 x 0.5)/0.8 = 63 kPa
9. Calculate the initial pressure when a sealed container of gas is squashed, reducing the volume from 0.5 m3 to 0.25 m3, with a final pressure of 120 kPa. (120 x 0.25)/0.5 = 60 kPa

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-mass-of-a-piece-of-magnesium-ribbon-(density-1.74-g/cm3)-with-a-volume-of-0.1-cm3.

Question 1 (of 9)

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-weight-must-a-table-have-to-give-a-pressure-of-5000-N/m2-with-four-legs-totalling-an-area-of-0.01-m2.

Question 2 (of 9)

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-change-in-pressure-when-a-scuba-diver-that-rises-from-10-m-below-the-surface-to-2-m-below-the-surface-in-salt-water,-density-1027-kg/m3.

Question 3 (of 9)

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=Convert-to-Kelvin:-Body-temperature---37°C

Question 4 (of 9)

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=Convert-to-degrees-Celsius-323-K

Question 5 (of 9)

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-final-pressure-when-a-sealed-container-of-gas-at-350-kPa-is-heated-from-0°C-to-100°C.

Question 6 (of 9)

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=Calculate-the-initial-pressure-when-a-sealed-container-of-gas-at-200-K-is-heated-to-300-K.-The-final-pressure-was-150-kPa.

Question 7 (of 9)

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=Calculate-the-final-pressure-when-a-sealed-container-of-gas-at-101,000-Pa-expands-from-a-volume-of-0.5-m3-to-0.8-m3.

Question 8 (of 9)

 


4th Year solids, liquids, gases: QR Challenge

https://www.classtools.net/QR/decode.php?text=Calculate-the-initial-pressure-when-a-sealed-container-of-gas-is-squashed,-reducing-the-volume-from-0.5-m3-to-0.25-m3,-with-a-final-pressure-of-120-kPa.

Question 9 (of 9)