QR Challenge: Chemistry Review

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 nucleus of the atom contains 2 subatomic particles. The proton and the neutron.
2. 2) Covalent bond form when atoms share electrons.
3. 3) The mass of the atom is mostly contained in its nucleus.
4. 4) An element is defined by its atomic number.
5. 5) The atomic number is the same as the number of protons in its nucleus.
6. 6) A period is a horizontal row in the periodic table of elements.
7. 7) The period defines how many shells.
8. 8) To find neutrons you subtract the atomic number from the atomic mass.
9. 9) To find the atomic mass you add the protons and neutrons together.
10. 10) Write an example symbol from any of the elements on the periodic table.
11. 11) Noble Gasses contain 8 electrons in their outer shell and do not normally bond with other elements. They are stable.
12. 12) Metals make up the majority of elements in the periodic table.
13. 13) H2O is an example of a molecule.
14. 14)The chemical formula for table salt is NaCl.
15. 15) A molecule is two or more atoms that are held together by a covalent bond and act a a unit.
16. 16) Atoms are the fundamental building blocks of all matter.
17. 17) In a chemical reaction nothing is lost or destroyed.
18. 18) Jackpot: Take a selfie of yourself with the QR code and show it to Mrs. Williams to receive 2 extra credit points on your test.

 

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