QR Challenge: Physical and Chemical Properties & Changes

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. blue color	p
2. density	p
3. flammability	c
4. solubility	p
5. reacts with acid	c
6. supports combustion	c
7. sour taste	p
8. melting point	p
9. reacts with water	c
10. hardness	p
11. boiling point	p
12. luster	p
13. odor	p
14. reacts with air	c
15. NaCl (table salt) dissolves in water	P
16. Ag (silver) tarnishes	c
17. An apple is cut	p
18. Heat Changes water to steam	p
19. baking soda reacts with vinegar	c
20. Fe(Iron) rusts	c
21. Alcohol Evaporates	p
22. Ice Melts	p
23. Milk Sours	c
24. Sugar dissolves in water	p
25. Wood rots	c
26. Pancakes Cook	c
27. Grass Grows	p
28. A tire is inflated	p
29. Food is digested	c
30. Paper towel absorbs water	p
31. An ice cube is placed in the sun, becomes a puddle of water and later the puddle is gone	p
32. Two chemicals are mixed together and a gas is produced	c
33. A bicycle changes color as it rusts	c
34. A solid is crushed to a powder	p

 

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