QR Challenge: Chapter 1: Chemistry

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 are the two properties of matter?	Physical and Chemical
2. What is a physical change?	An alteration in appearance of a substance but NOT its chemical makeup.
3. What are substances that undergo a chemical change called?	Reactants
4. What is the new substance formed from a chemical change called?	Products
5. What happens to bonds during a chemical change?	bread and new bonds form
6. What are are the four signs of a chemical change?	precipitate, gas, color, energy(temp)
7. What is a precipitate?	solid that forms during a chemical reaction
8. What do you observe when a gas is formed during a chemical reaction?	bubbles
9. What is an exothermic reaction?	Energy is released, heat is produced
10. Find an example of an exothermic reaction in your book.	gas burning
11. What is an endothermic reaction?	Energy is absorbed, temperature decreases
12. Find an example of an endothermic reaction in your book.	baking soda and vinegar

 

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