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QR Challenge: Word Equations

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. Zinc and lead (II) nitrate react to form zinc nitrate and leadZn + Pb(NO3)2  Zn(NO3)2 + Pb
2. Aluminum bromide and chlorine gas react to form aluminum chloride and bromine gas2 AlBr3 + 3 Cl2  2 AlCl3 + 3 Br2
3. Sodium phosphate and calcium chloride react to form calcium phosphate and sodium chloride2 Na3PO4 + 3 CaCl2  6 NaCl + Ca3(PO4)2
4. Potassium metal and chlorine gas combine to form potassium chloride2 K + Cl2  2 KCl
5. Hydrogen gas and nitrogen monoxide react to form water and nitrogen gas2 H2 + 2 NO  2 H2O + N2
6. The reaction of ammonia with iodine to form nitrogen triiodide and hydrogen gasNH3 + I2 yields NI3 + H2
7. The reaction of copper (II) oxide with hydrogen to form copper metal and waterCuO+H2 yields Cu +H2O
8. The reaction of iron metal with oxygen to form iron (III) oxideFe + O2 yields Fe2O3

 


Word Equations: QR Challenge

https://www.classtools.net/QR/decode.php?text=Zinc-and-lead-(II)-nitrate-react-to-form-zinc-nitrate-and-lead

Question 1 (of 8)

 


Word Equations: QR Challenge

https://www.classtools.net/QR/decode.php?text=Aluminum-bromide-and-chlorine-gas-react-to-form-aluminum-chloride-and-bromine-gas

Question 2 (of 8)

 


Word Equations: QR Challenge

https://www.classtools.net/QR/decode.php?text=Sodium-phosphate-and-calcium-chloride-react-to-form-calcium-phosphate-and-sodium-chloride

Question 3 (of 8)

 


Word Equations: QR Challenge

https://www.classtools.net/QR/decode.php?text=Potassium-metal-and-chlorine-gas-combine-to-form-potassium-chloride

Question 4 (of 8)

 


Word Equations: QR Challenge

https://www.classtools.net/QR/decode.php?text=Hydrogen-gas-and-nitrogen-monoxide-react-to-form-water-and-nitrogen-gas

Question 5 (of 8)

 


Word Equations: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-reaction-of-ammonia-with-iodine-to-form-nitrogen-triiodide-and-hydrogen-gas

Question 6 (of 8)

 


Word Equations: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-reaction-of-copper-(II)-oxide-with-hydrogen-to-form-copper-metal-and-water

Question 7 (of 8)

 


Word Equations: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-reaction-of-iron-metal-with-oxygen-to-form-iron-(III)-oxide

Question 8 (of 8)