QR Challenge: Periodic Table

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.

---

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. What is the center of an atom called?	nucleus
2. What subatomic particles are in the nucleus of an atom?	protons and neutrons
3. What is the atomic number of Oxygen?	8
4. The number of protons in an atom is the same as the number of ___?	electrons
5. How many electrons can the first electron shell of an atom hold?	2
6. The atomic mass of an element is the number of ___ + the number of ___.	protons neutrons
7. What is the atomic mass of aluminum?	27
8. What element has atomic number 2?	helium
9. What do elements combine to create a molecule of water?	oxygen hydrogen
10. How many electrons can the second shell of an atom hold?	8
11. How many electrons can the third shell of an atom hold?	8
12. What is the chemical symbol for iron?	Fe
13. What is the atomic number of Calcium?	20
14. How many protons are in an atom of Nickel?	28
15. What element is K?	Potassium
16. How many electrons are in an atom of Argon?	18
17. How many neutrons are in an atom of Titanium?	26
18. What is the atomic mass of Tin?	119
19. How many protons are in an atom of Copper?	29
20. How many electrons are in an atom of Radon?	54
21. What is the atomic number of Silicon?	14
22. What is the chemical symbol for Calcium?	Ca
23. What element is Na?	Sodium
24. The formula for salt is NaCl. What 2 elements make up a molecule of salt?	Sodium Chlorine

 

---