QR Challenge: Chemical Equations and Reaction

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. Synthesis reaction	A+B-->AB
2. Decomposition	AB-->A+B
3. Single Displacement	AB+C-->AC+B
4. Double Displacement	AB+CD-->AC+BD
5. Acid Base	HA+BOH-->HA+H20
6. Organic Chemistry Name for displacement	substitution
7. Organic Chemistry Name for Addition	synthesis
8. Organic Chemistry Name for Elimination	Decomposition
9. What type of reaction is this: Na3PO4 + 3 KOH --> 3NaOH + K3PO4	double displacement
10. What type of reaction is this: P4 + 3O2 --> 2 P2O3	synthesis
11. Write the chemical equation for the following: ammonium nitrate decomposes explosively to form nitrogen, oxygen and water vapor	NH4 NO3 --> N2 +O2 +H2O
12. Write the chemical equation for the following: phosporous reacts with oxygen gas to produce diphosporous pentoxide.	P + O --> 2P +O5
13. Describe the carboxylic acid functional group	double bonded O with a single bonded OH
14. Describe the ether functional group	double bonded O and a single bonded O
15. Describe the ketone functional group	double bonded O
16. Describe the alcohol functional group	single bonded OH
17. Describe the alkyl halide functional group	single bonded x=F, Cl, Br, I
18. What type of bonds do alkanes have?	single
19. What type of bonds to alkynes have?	Triple
20. What is the prefix for 3 in organic chemistry?	prop
21. What is the prefix for 4 in organic chemistry?	but
22. What suffix is added to branches from the parent chain?	yl
23. What is the importance of Carbon's 4 valence	ability to bond
24. Why is organic chemistry important?	various answers
25. What are esters used for in our daily life?	flavor food
26. Where are ketones found?	blood and urine. Produced in the liver
27. Balance the following equation: H2 + O2-->H2O	2H2 + O2 ---> 2H2O
28. Balance the following equation: H2 + Cl2 ---> HCl	H2 + Cl2 ---> 2HCl
29. Balance the following equation: Fe + O2 -->2Fe2O3	4Fe+3O2-->2Fe2O3

 

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