QR Challenge: Chemistry Review (Thanksgiving)

Created using the ClassTools QR Treasure Hunt Generator

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

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

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

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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!

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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.

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Questions / Answers (teacher reference)

Question	Answer
1. How many protons does chlorine have?	17
2. What charge does a calcium ion have?	+2
3. How many electrons does a nitrogen ION have?
4. List a halogen.
5. Draw the Lewis structure for CO2.
6. Convert 5.0 grams of nitrogen into moles.
7. A 50-gram sample of an element has a half-life of 6 seconds. How much remains after 4 halflives?
8. Write the formula for iron (III) oxide.
9. An ionic compound contains _______________.
10. Uranium-238 undergoes the following decay--alpha, alpha, beta. What is the result?
11. How many neutrons does cobalt-59 have?
12. Write the electron configuration for sulfur.
13. Write the electron configuration for a calcium ION.
14. What's another name for group 2 elements?
15. How many electrons does a neutral bromine atom have?
16. Convert 43 miles to inches.
17. How many significant figures: 0.006050
18. Calculate the molar mass of MgSO4
19. Write a formula for platinum (II) iodate trihydrate.
20. Sketch a picture of an exothermic graph. Label the change in enthalpy. It has to be drawn clearly to earn this point!

 

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