QR Challenge: Periodic Table Scavenger Hunt

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. The family that is the most reactive on the periodic table is	Group 1/Alkali Metals
2. 2. This element is a liquid metal at room temperature	Mercury
3. 3. Name of group/family 17	Halogens
4. 4. Symbol for gold is	Au
5. 5. The number of periods on the periodic table	7
6. 6. What happens to atomic mass as you go down a column?	Increases
7. 7. State of matter of Calcium	Solid
8. 8. The lightest massed metalloid	Boron
9. 9. Family that is the least reactive on the periodic table	Group 18/Noble Gases
10. 10. Give the group and period numbers for Iodine	Group 17, Period 5
11. 11. What is the symbol for silver?	Ag
12. 12. Reactivity___________as you go left to right.	Decreases
13. 13. Elements in the Lanthanide and Actinide series are called	Rare Earths
14. 14. Elements that have properties similar to metals and nonmetals	Metalloids
15. 15. Give the group and period of Polonium	Group 16, Period 6
16. 16. State of matter of Hydrogen	Gas
17. 17. ____________is a liquid nonmetal.	Bromine
18. 18. Most of the Periodic Table is made up of	Metals
19. 19. The heaviest natural element is named	Uranium
20. 20. This tells the number of protons in the nucleus of an atom	Atomic Number
21. 21. Which family is the only family to contain a solid, liquid and gas at room temperature?	Halogens
22. 22. What is the atomic mass of Mo?	95.94
23. 23. Which element in this pair is the MOST active/reactive? Magnesium or Iron	Magnesium
24. 24. Which element in this pair is the LEAST active/reactive? Phosphorus or Barium	Phosphorus
25. 25. In what period is element 46 found?	Period 5
26. 26. What is the first nonmetal in the sixth period of the periodic table?	Radon
27. 27. To what chemical family does calcium belong?	Alkaline Earth Metals
28. 28. Is W a metal, non-metal, or metalloid?	Metal
29. 29. How many valence electrons does Cesium have?	1
30. 30. What period number are the lanthanides part of?	Period 6

 

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