QR Challenge: Element, Compounds, Mixtures and Molecules

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. 1. Is sand an element, compound or mixture?	mixture
2. 2. Is gold an element, compound or mixture?	element
3. 3. Is air an element, compound or mixture?	mixture
4. 4. Is water an element, compound or mixture?	compound
5. 5. Is soft drink an element, compound or mixture?	mixture
6. 6. Is hydrogen an element, compound or mixture?	element
7. 7. Is carbon dioxide an element, compound or mixture?	compound
8. 8. Is brass an element, compound or mixture?	mixture
9. 9. Is diamond an element, compound or mixture?	element
10. 10. Hydrochloric acid has the formula HCl, and is made up of hydrogen and which other element?	chlorine
11. 11. Chloroform has the formula CHCl3, and is made up of hydrogen, chlorine and which other element?	carbon
12. 12. Table salt has the formula NaCl, and is made up of chlorine and which other element?	sodium
13. 13. Sulfuric acid has the formula H2SO4, and is made up of hydrogen, oxygen and which other element?	sulfur
14. 14. Hydrochloric acid has the formula HCl, and is made up of hydrogen and which other element?	chlorine
15. 15. Ammonia has the formula NH3 and is made up of hydrogen and which other element?	nitrogen
16. 16. What is the chemical symbol for silver? (hint: look up at the periodic table)	Ag
17. 17. What is the chemical symbol for lead? (hint: look up at the periodic table)	Pb
18. 18. What is the chemical symbol for mercury? (hint: look up at the periodic table)	Hg
19. 19. What is the chemical symbol for Potassium? (hint: look up at the periodic table)	K
20. 20. True or false: metals are poor conductors of electricity	false
21. 21. Tru or false: If you conduct the experimenet correctly it is possible to destroy matter	false
22. 22. True or false: gases are colourless and odourless	false
23. 23. True ot false: Only twenty-two of the elements on the periodic table are non-metals	true
24. 24. True or false: The nucleus of the atom is made up of protons and electrons	false
25. 25. True or false: Ms Clarke is the bestest science teacher ever	true

 

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