QR Challenge: Chemical Bonds 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. Determine the type of bonding in CaO and in SO2	ionic bonding in CaO and covalent bonding in SO2
2. What is the formula for potassium sulfide?	K2S
3. What is the formula for calcium chloride?	CaCl2
4. Challenge: What is the formula for lead(IV) phosphide?	Pb3P4
5. What is the name of AlCl3?	aluminum chloride
6. What is the name of Li2S?	lithium sulfide
7. Challenge: What is the name of Cr2O3?	chromium(III) oxide
8. Which elements are least likely to react with other elements?	noble gases
9. What is the name of CuO?	copper(II) oxide
10. What is the name of an atom that has gained an electron?	anion

 

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