QR Challenge: Common Household Chemicals
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. Ethanol | alchohol
|
2. Sodium bicarbonate | alka seltzer
| 3. Ethylene | Antifreeze
| 4. Aluminum Chlorohydrate | antiperspirant deodorant
| 5. Sodium hypochlorite | bleach
| 6. Acetylsalicylic acid | aspirin
| 7. Sodium hydroxide | lye drain cleaner
| 8. Magnesium sulfate | Epsom salt
| 9. Sodium bicarbonate | baking soda
| 10. Acetic acid | vinegar
| 11. Magnesium hydroxide | milk of magnesia
| 12. Sodium chloride | table salt
| 13. Dihydrogen monoxide | water
| 14. Sucrose | sugar
| 15. Iron oxide | rust
| 16. Silicon dioxide | sand, Quartz
| 17. Ascorbic acid | Vitamin C
| 18. Naphthalene | moth balls
| 19. Sulfuric acid | car battery acid
| 20. Acetaminophen | tylenol
| 21. Acetone | nail polish remover/paint thinner |
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q1/21:
Ethanol&choe=UTF-8
Question 1 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q2/21:
Sodium bicarbonate&choe=UTF-8
Question 2 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q3/21:
Ethylene&choe=UTF-8
Question 3 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q4/21:
Aluminum Chlorohydrate&choe=UTF-8
Question 4 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q5/21:
Sodium hypochlorite&choe=UTF-8
Question 5 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q6/21:
Acetylsalicylic acid&choe=UTF-8
Question 6 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q7/21:
Sodium hydroxide&choe=UTF-8
Question 7 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q8/21:
Magnesium sulfate&choe=UTF-8
Question 8 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q9/21:
Sodium bicarbonate&choe=UTF-8
Question 9 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q10/21:
Acetic acid&choe=UTF-8
Question 10 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q11/21:
Magnesium hydroxide&choe=UTF-8
Question 11 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q12/21:
Sodium chloride&choe=UTF-8
Question 12 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q13/21:
Dihydrogen monoxide&choe=UTF-8
Question 13 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q14/21:
Sucrose&choe=UTF-8
Question 14 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q15/21:
Iron oxide&choe=UTF-8
Question 15 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q16/21:
Silicon dioxide&choe=UTF-8
Question 16 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q17/21:
Ascorbic acid&choe=UTF-8
Question 17 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q18/21:
Naphthalene&choe=UTF-8
Question 18 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q19/21:
Sulfuric acid&choe=UTF-8
Question 19 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q20/21:
Acetaminophen&choe=UTF-8
Question 20 (of 21)
Common Household Chemicals: QR Challenge
https://www.classtools.net/QR/decode.php?text=Common Household Chemicals
Q21/21:
Acetone&choe=UTF-8
Question 21 (of 21)
