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QR Challenge: Atomic History

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

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 are the types of the following elements lithium, oxygen, krypton, and aluminum (i.e., metalloids, metal, nonmetal, and noble gas ?metal, nonmetal, noble gas, and metalloid
2. Who was the first scientist to come up with the atomic theory?John Dalton
3. What is the mass number of an oxygen atom that has 8 protons and 9 neutrons? 17
4. What group of elements is considered to be unreactive?noble gases
5. What subatomic particle has the least mass?electron
6. If the protons increase across the periodic table, what happens to the electrons?they increase
7. What is the name of the group of elements that are the most reactive and what group are they in?Group 1
8. How many neutrons does Argon contain?22
9. What is an isotope?atoms of the same element that have different mass numbers
10. What experiment was Rutherford credited with?gold foil experiment
11. Who was the scientist who had a model of fixed orbitals for electrons?bohr
12. What is the name for an element in group 1?alkali metals
13. What has to happen for an atom to be electrically neutral?it has the same number of protons and electrons
14. What is the average atomic mass for cesium with 75% 133, 20% 132,and 5% 134? 132.85
15. How many electrons are in a Mg atom?12
16. If you have 55 protons and 82 neutrons for Cesium, what is the mass number? 137
17. What group would it be the most difficult to remove 1 electron?group 17
18. How did Mendeleev arrange the periodic table?by atomic mass
19. If you have Hydrogen, Lithium, and Sodium, what are the two similarities (properties) among these elements?they have similar physical and chemical properties
20. What is the one thing that identifies and element?atomic number

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-are-the-types-of-the-following-elements-lithium,-oxygen,-krypton,-and-aluminum-(i.e.,-metalloids,-metal,-nonmetal,-and-noble-gas-?

Question 1 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=Who-was-the-first-scientist-to-come-up-with-the-atomic-theory?

Question 2 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-mass-number-of-an-oxygen-atom-that-has-8-protons-and-9-neutrons?

Question 3 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-group-of-elements-is-considered-to-be-unreactive?

Question 4 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-subatomic-particle-has-the-least-mass?

Question 5 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=If-the-protons-increase-across-the-periodic-table,-what-happens-to-the-electrons?

Question 6 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-name-of-the-group-of-elements-that-are-the-most-reactive-and-what-group-are-they-in?

Question 7 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-neutrons-does-Argon-contain?

Question 8 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-an-isotope?

Question 9 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-experiment-was-Rutherford-credited-with?

Question 10 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=Who-was-the-scientist-who-had-a-model-of-fixed-orbitals-for-electrons?

Question 11 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-name-for-an-element-in-group-1?

Question 12 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-has-to-happen-for-an-atom-to-be-electrically-neutral?

Question 13 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-average-atomic-mass-for-cesium-with-75%-133,-20%-132,and-5%-134?

Question 14 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-electrons-are-in-a-Mg-atom?

Question 15 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=If-you-have-55-protons-and-82-neutrons-for-Cesium,-what-is-the-mass-number?

Question 16 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-group-would-it-be-the-most-difficult-to-remove-1-electron?

Question 17 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=How-did-Mendeleev-arrange-the-periodic-table?

Question 18 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=If-you-have-Hydrogen,-Lithium,-and-Sodium,-what-are-the-two-similarities-(properties)-among-these-elements?

Question 19 (of 20)

 


Atomic History : QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-one-thing-that-identifies-and-element?

Question 20 (of 20)