QR Challenge: Chemistry EOQ 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. What is the electrical charge of an electron	negative
2. Where is the nucleus of an atom	the center
3. What is the Atomic Number of oxygen	8
4. What is formed when two or more elements chemically combine	compound
5. The smallest unit of matter	the atom
6. Which sub group of elements are found on the left side of the Periodic Table	metals
7. What does the atomic mass tell you	number of protons and neutrons in nucleus
8. A combination of different elements and/or compounds not chemically combined	mixture
9. This tells you the number of atoms of each element that make up a compound	Chemical Formula
10. Matter cannot be created or destroyed in a chemical reaction	Law of Conservation of Mass/Matter
11. These elements are mostly gases at room temp., do not conduct electricity, and have low boiling points	Non metals
12. Anything that has a mass and volume	matter
13. A balanced chemical equation	2 H2 + O2 > 2 H2O
14. Properties that can be measured or observed without changing the substance	physical properties
15. The chemical symbol for Iron	Fe
16. The elements on the Periodic Table are arranged in order of	atomic number
17. The element found in Group 17, Period 3 of the Periodic Table	Chlorine
18. The number of neutrons in a typical Neon atom	10
19. The left side of the arrow in a chemical reaction equation	Reactants
20. The first energy level of an atom can hold what max number of electrons	2
21. How many electron energy levels does an atom of Mercury have	6
22. These properties describe how easily an element combines with other elements	chemical properties
23. The ability of an element to transfer heat and/or electricity	conductivity
24. The temperature that a substance changes from a solid to a liquid	melting point
25. The number of valence electrons surrounding an atom of Boron	3
26. These have a definite composition that does not vary	pure substance
27. A measure of how shiny a substance is	luster

 

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