QR Challenge: Atoms and the Periodic Table

Created using the ClassTools QR Treasure Hunt Generator

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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. Add these numbers together for your first clue (then go to that room): the element with 6 electron clouds and 6 valence electrons added to the element in the 5th period having 6 valence electrons added to the element with 2 energy levels and a charge of -3	143
2.
3. Use these symbols to spell a teacher's name: The 6th period alkaline earth metal, the first nonmetal in family 5, the inner transition metal with 66 protons	BaNDy
4.
5. Find the symbols of the following elements in order to determine whose room you are to visit next: The first member of family 6, the first member of the halogen family, the element in period 2 with an atomic mass of 19.00, the element with 5 energy levels that is a halogen, an inner transition metal with 140 nucleons, 82 of which are neutrons	OFFICe
6.
7. Find the symbols of the following elements in order to determine which room to visit next: The alkali metal in period 2, the metalloid with 6 neutrons, the alkaline earth metal that has 7 energy levels, the symbol for Rhenium minus the "e", the symbol for the element that would have an atomic number of 39	LiBRaRY
8.
9. Find the element that does NOT belong in this list: Tin, Lead, Silicon, Antimony. Next, take that element's atomic number, multiply by 5 and then add the charge number for H...this is your next room number!	256
10.
11. Put the following numbers in order so you can find the room number you are to visit next: number of electron clouds for Oxygen, then the number of nucleons (atomic mass) of Hydrogen, then the number of valence electrons in Gallium	213
12.
13. Return to our room	134

Atoms and the Periodic Table: QR Challenge

https://www.classtools.net/QR/decode.php?text=Add-these-numbers-together-for-your-first-clue-(then-go-to-that-room):-the-element-with-6-electron-clouds-and-6-valence-electrons-added-to-the-element-in-the-5th-period-having-6-valence-electrons-added-to-the-element-with-2-energy-levels-and-a-charge-of--3

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