QR Challenge: Compound Scavenger Hunt

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. table salt	NaCl
2. Epsom salts	magnesium sulfate
3. compound that makes cakes rise	baking soda
4. table salt substitute	KCl
5. acid found in Italian salad dressing	acetic acid
6. battery acid	sulfuric acid
7. universal solvent	water
8. makes soda bubble	carbon dioxide
9. element that makes balloons float	helium
10. sand	silicon dioxide
11. rust	Iron (III) oxide
12. milk of magnesia	magnesium hydroxide
13. washing soda	sodium carbonate
14. silver tarnish	silver sulfide
15. patina on the statue of liberty	copper (II) sulfate
16. gas that smells like rotten eggs	hydrogen sulfide
17. main ingredient in Windex	ammonia
18. table sugar	sucrose
19. vanilla	C8H8O3
20. bleach	NaClO
21. what you cant have until you are 21	ethyl alcohol
22. active ingredient in asprin	acetylscalicylic acid
23. acid used as an antisceptic and is also a flame retardant	boric acid
24. drain cleaner	sodium hydroxide
25. compound that makes up egg shells	calcium carbonate
26. main ingredient in liquid paper	titanium (IV) oxide
27. what were mothballs traditionally made out of	naphthalene
28. quicklime	CaO
29. smelling salts	(NH4)2CO3
30. vitamin that is found in orange juice	vitamin C

 

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