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QR Challenge: Chemical Reactions

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

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  ZnCl21
2. Classify this reaction: C6H12O6 + O2 -> CO2 + H2O2
3. Classify this reaction: Cu + 2 AgNO3  Cu(NO3)2 + 2 Ag 3
4. Classify this reaction: Mg(OH)2  MgO + H2O4
5. Classify this reaction: CaCl2 + Na2SO4  CaSO4 + 2 NaCl5
6. Classify this reaction: H2SO4 + Mg(OH)2 -> MgSO4 + H2O6
7. Classify this reaction: Pb + 4 HCl  PbCl4 + 2 H27
8. Classify this reaction: Li2O + CO2  LiCO38
9. Classify this reaction: SO2 + H2O  H2SO39
10. Classify this reaction: MgCO3  MgO + CO210
11. Balance this equation: ____ AlBr3 + ____ K  ____ KBr + ____ Al11
12. Balance this equation: ____ FeO + ____ PdF2  ____ FeF2 + ____ PdO12
13. Balance this equation: ____ P4 + ____ Br2  ____ PBr313
14. Balance this equation: ____ LiCl + ____ Br2  ____ LiBr + ____ Cl214
15. Balance this equation: ____ PbBr2 + ____ HCl  ____ HBr + ____ PbCl215
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)