QR Challenge: COLLISION THEORY & FACTORS THAT AFFECTS RATE OF CHEMICAL REACTIONS

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 will happen in the particles of the substance when the temperature is increased?	The particles will move faster and collide frequently.
2. What does a catalyst do?2	It increases the rate of the chemical reaction by lowering the activation energy needed.2
3. What factor increases the rate of a chemical reaction when a substance is powdered?3	Particle size3
4. It is a set of principles that states for a chemical reaction to occur, the reactant molecules must collide with enough energy and are in proper orientation.4	collision theory4
5. What will happen to the rate of chemical reaction if the concentration of the reactants is increased5	The rate of reaction is faster5

 

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