QR Challenge: Writing and Naming Chemical Formulas

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. copper (II) chloride	CuCl2
2. lithium acetate	LiCH3COO
3. vanadium (III) selenide	VSe
4. manganese (IV) nitride	Mn3N4
5. beryllium oxide	BeO
6. sodium sulfate	Na2SO4
7. aluminum arsenide	AlAs
8. potassium permanganate	KMnO4
9. chromium (VI) cyanide	Cr(CN)6
10. tin (II) sulfite	SnSO3
11. vanadium (V) fluoride	VF5
12. ammonium nitrate	NH4NO3
13. NaBr	sodium bromide
14. Ca(C2H3O2)2	calcium acetate
15. P2O5	diphosphorus pentoxide
16. Ti(SO4)2	Titanium (II) sulfate
17. FePO4	iron (III) phosphate
18. K3N	potassium nitride
19. SO2	sulfur dioxide
20. CuOH	copper(I) hydroxide
21. Zn(NO2)2	zinc nitrite
22. V2S3	Vanadium (III) sulfide
23. SCl4	sulfur tetrachloride
24. CH4	carbon tetrahydride
25. B2Si	diboron monosilicide
26. NF3	nitrogen trifluoride
27. hexaboron monosilicide	B6S
28. chlorine dioxide	ClO2
29. hydrogen iodide	HI
30. iodine pentafluoride	IF5
31. dinitrogen trioxide	N2O3

 

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