QR Challenge: Matter 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. Anything that has a mass and takes up space	Matter
2. The amount of mass in a given volume	Density
3. The amount of space something occupies	Volume
4. A measure of the amount of matter	Mass
5. Cutting a piece of paper in half is a physical change and burning the paper is a chemical change. How would you explain the difference between a physical and a chemical change?	Physical change is a change in shape,state, or size, chemical is a change is when a new substance is formed
6. What is the formula to find the density of an object	Density=Mass/Volume
7. What is the density of water?	1g/cm3
8. The following liquids are arranged from least dense to most dense: vegetable oil, water, dish soap, corn syrup, honey. If you poured them into a cup, which liquid would be on the bottom?	Honey
9. How are the particles in a solid arranged?	tightly packed together and vibrate
10. How are the particles in a liquid arranged	touching, but slowly sliding past each other
11. How are the particles in a gas arranged?	move around rapidly
12. What is it called when a solid changes state to a liquid?	Melting
13. What is it called when a solid changes state to a gas?	Sublimation
14. What is it called when a liquid changes state to a gas?	Evaporation
15. What is it called when a gas changes state to a liquid?	Condensation
16. What is it called when a liquid changes state to a solid?	Freezing
17. What can be added or removed from matter to make it change states?	Energy
18. the same?	Increase
19. Is to press or squeeze (something) so that it is smaller or fills less space. Is it: compression, diffusion, dissolving, or thermal expansion?	Compression
20. is when matter changes in volume due to an increase in temperature. Is it: compression, diffusion, dissolving, or thermal expansion?	Thermal expansion
21. is the act of spreading or allowing to spread freely. Is it: compression, diffusion, dissolving, or thermal expansion?	Thermal Expansion
22. ______________ is to become incorporated into a liquid so as to form a solution. An example of this is what happens to a sugar cube when it is placed in water. Is it: compression, diffusion, dissolving, or thermal expansion?	Dissolving

 

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