QR Challenge: Chemistry Spring 2017 Semester Exam 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. In this equation, which are the reactant(s)?a.Mg only b. MgO only c. Mg + O2 d. O2 only	Mg + O2
2. In a chemical equation, (aq) after one of the substances means that it is which of these?	a. a solid formed from two ionic substances b. released as gas
3. Which term is described as the lowest whole-number ratio of elements in a compound?	a. hydrate b. molecular formula c. empirical formula d. percent composition
4. Which type of reaction involves one element and one compound reacting?	a. decomposition b. double replacement c. single replacement d. synthesis
5. How many total atoms are in 3Na2SO4?	a. 21 b. 10 c. 24 d. 18

 

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