QR Challenge: Chemical Reactions
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.
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. Classify this reaction: Zn + Cl2 ZnCl2 | 1
|
2. Classify this reaction: C6H12O6 + O2 -> CO2 + H2O | 2
| 3. Classify this reaction: Cu + 2 AgNO3 Cu(NO3)2 + 2 Ag | 3
| 4. Classify this reaction: Mg(OH)2 MgO + H2O | 4
| 5. Classify this reaction: CaCl2 + Na2SO4 CaSO4 + 2 NaCl | 5
| 6. Classify this reaction: H2SO4 + Mg(OH)2 -> MgSO4 + H2O | 6
| 7. Classify this reaction: Pb + 4 HCl PbCl4 + 2 H2 | 7
| 8. Classify this reaction: Li2O + CO2 LiCO3 | 8
| 9. Classify this reaction: SO2 + H2O H2SO3 | 9
| 10. Classify this reaction: MgCO3 MgO + CO2 | 10
| 11. Balance this equation: ____ AlBr3 + ____ K ____ KBr + ____ Al | 11
| 12. Balance this equation: ____ FeO + ____ PdF2 ____ FeF2 + ____ PdO | 12
| 13. Balance this equation: ____ P4 + ____ Br2 ____ PBr3 | 13
| 14. Balance this equation: ____ LiCl + ____ Br2 ____ LiBr + ____ Cl2 | 14
| 15. Balance this equation: ____ PbBr2 + ____ HCl ____ HBr + ____ PbCl2 | 15
| 16. Complete this reaction: C4H10 + oxygen --> | 16
| 17. Complete this reaction: AgNO3 + Fe2S3 --> | 17
| 18. Complete this reaction: zinc + sulfuric acid--> | 18
| 19. Complete this reaction: calcium chloride + potassium hydroxide--> | 19
| 20. Complete this reaction: Na2SO4 + Ba(NO3)2 --> | 20 |
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_Zn___+____Cl2___ZnCl2
Question 1 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_C6H12O6_+_O2_->_CO2_+_H2O
Question 2 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_Cu_+_2_AgNO3__Cu(NO3)2_+_2_Ag
Question 3 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_Mg(OH)2__MgO_+_H2O
Question 4 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_CaCl2____+____Na2SO4__CaSO4_+_2_NaCl
Question 5 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_H2SO4_+_Mg(OH)2_->_MgSO4_+_H2O
Question 6 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_Pb__+_4_HCl__PbCl4_+_2_H2
Question 7 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_Li2O_+___CO2__LiCO3
Question 8 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_SO2_+___H2O__H2SO3
Question 9 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Classify_this_reaction:_MgCO3__MgO_+_CO2
Question 10 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Balance_this_equation:______AlBr3_+______K_______KBr_+______Al
Question 11 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Balance_this_equation:______FeO_+______PdF2_______FeF2_+______PdO
Question 12 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Balance_this_equation:______P4_+______Br2_______PBr3
Question 13 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Balance_this_equation:______LiCl_+______Br2_______LiBr_+______Cl2
Question 14 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Balance_this_equation:______PbBr2_+______HCl_______HBr_+______PbCl2
Question 15 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Complete_this_reaction:_C4H10_+_oxygen_-->
Question 16 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Complete_this_reaction:_AgNO3____+_Fe2S3__-->
Question 17 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Complete_this_reaction:_zinc_+_sulfuric_acid-->
Question 18 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Complete_this_reaction:_calcium_chloride_+_potassium_hydroxide-->
Question 19 (of 20)
Chemical Reactions: QR Challenge
https://www.classtools.net/QR/decode.php?text=Complete_this_reaction:_Na2SO4_+_Ba(NO3)2_-->
Question 20 (of 20)