QR Challenge: Modern Atomic Theory
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. distance between two waves | wavelength
|
2. the number of waves that pass a given point per unit of time2 | frequency2
| 3. tiny packet of energy3 | photo3
| 4. contains an electron with excess energy4 | excited state4
| 5. lowest possible energy state for an atom5 | ground state5
| 6. region where an electron resides in an atom6 | orbital6
| 7. an atomic orbital can hold no more than two electrons, and they must be of opposite spin7 | Pauli Exclusion Principle7
| 8. electrons in outermost (highest) occupied principal energy level8 | valence electrons8
| 9. inner electrons of an atom9 | core electrons9
| 10. energy required to remove an electron from an atom in the gas phase10 | ionization energy10
| 11. The configuration for the outermost energy level in Al11 | 3s23p11
| 12. When an electron in an atom absorbs energy, it does what?12 | moves to a higher energy level12
| 13. Which of the following is the smallest atom? K, Ge, Si or 013 | O13
| 14. Which of the following has the highest ionization energy? K, Ge, Si or O14 | O14
| 15. As the wavelength of light increases, its frequency (increases or decreases)15 | decreases15
| 16. Which atom has six 3d electrons? Fe, Co, Ru or Rh16 | Fe16
| 17. Which one of the following elements has five valence electrons? B, C, N, F17 | N17 |
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=distance-between-two-waves
Question 1 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=the-number-of-waves-that-pass-a-given-point-per-unit-of-time2
Question 2 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=tiny-packet-of-energy3
Question 3 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=contains-an-electron-with-excess-energy4
Question 4 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=lowest-possible-energy-state-for-an-atom5
Question 5 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=region-where-an-electron-resides-in-an-atom6
Question 6 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=an-atomic-orbital-can-hold-no-more-than-two-electrons,-and-they-must-be-of-opposite-spin7
Question 7 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=electrons-in-outermost-(highest)-occupied-principal-energy-level8
Question 8 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=inner-electrons-of-an-atom9
Question 9 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=energy-required-to-remove-an-electron-from-an-atom-in-the-gas-phase10
Question 10 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=The-configuration-for-the-outermost-energy-level-in-Al11
Question 11 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=When-an-electron-in-an-atom-absorbs-energy,-it-does-what?12
Question 12 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=Which-of-the-following-is-the-smallest-atom?-K,-Ge,-Si-or-013
Question 13 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=Which-of-the-following-has-the-highest-ionization-energy?-K,-Ge,-Si-or-O14
Question 14 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=As-the-wavelength-of-light-increases,-its-frequency-(increases-or-decreases)15
Question 15 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=Which-atom-has-six-3d-electrons?-Fe,-Co,-Ru-or-Rh16
Question 16 (of 17)
Modern Atomic Theory: QR Challenge
https://www.classtools.net/QR/decode.php?text=Which-one-of-the-following-elements-has-five-valence-electrons?-B,-C,-N,-F17
Question 17 (of 17)
