QR Challenge: Solids, Liquids, and Gases 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 state of matter in which particles are arranged in either a crystalline or an amorphous form?	SOLID
2. What is the resistance of a liquid to flow?	VISCOSITY
3. What happens to the volume of an inflated balloon when it is exposed to cold air?	DECREASES
4. What does a graph that shows the pressure of a gas varies inversely with its volume under constant temperature demonstrate?	BOYLE’S LAW
5. What does a substance lose to its surroundings when it cools?	THERMAL ENERGY
6. What happens to the pressure when the speed of gas particles in a container increases?	INCREASES
7. What is the force of a gas’s outward push divided by the area of the walls of the container?	PRESSURE
8. What process does a solid turn directly into a gas?	SUBLIMATION
9. What is the process of a liquid becoming a gas?	VAPORIZATION
10. What is the opposite of vaporization?	CONDENSATION
11. What relationship does a graph of Charles’s law show?	VOLUME IS DIRECTLY PROPORTIONAL TO TEMPERATURE AT CONSTANT PRESSURE
12. Why can the surface of water act like a type of skin due to the property of liquids?	SURFACE TENSION
13. What sequence can you infer from an uncovered pot of soup simmering on a stove and water droplets on the wall above the back of the stove have formed?	EVAPORATION, THEN CONDENSATION
14. What does a graph that shows the volume of a gas is directly proportional to its temperature under constant pressure demonstrate?	CHARLES’S LAW
15. What occurs when particles in a gas lose enough thermal energy to form a liquid?	CONDENSATION
16. What are salt, sugar, and snow examples of?	CRYSTALLINE SOLID
17. What is a shrinking puddle an example of?	EVAPORATION
18. What does a graph of Boyle’s law show?	PRESSURE VARIES INVERSELY TO THE VOLUME AT CONSTANT TEMPERATURE
19. What is the name of the process where the amount of snow on the ground may decrease even though the temperature stays below zero degrees Celsius?	SUBLIMATION
20. What does a graph that shows a line sloping upward from left to right?	CHARLES’S LAW
21. What decreases when the speed of gas molecules in a rigid container decreases?	PRESSURE
22. Why are weather balloons filled with only a small amount of helium?	THE VOLUME OF THE BALLOON WILL INCREASE AS THE AIR PRESSURE DECREASES AT HIGHER ALTITUDES

 

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