# Print

## 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

• Bring these devices into the lesson.

4. Cut them out and place them around your class / school.

## 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!

## 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.

### Question

1. 1. Convert to S.N: .0000005405.40 X 10-7
2. 2. Convert to long form: 2.3 X 1092300000000
3. 3. How could 100 be written with 2 Significant figures?1.0 X 102
4. 4. Convert .8856 cm to nm.8,856,000
5. 5. Metric unit of mass?kilogram
6. 6. Type of research that seeks to gain new knowledgepure research
7. 7. When a hypothesis is not supported by the data, what happens?should be discarded or modified
8. 8. You collect data on the % of students that are various ages at LHS. This is what type of data?quantitative
9. 9. You are studying the effects of different temp. on dissolving rates of salt.What is the dependent variable?dissolving rate/time
10. 10. Metric unit of temp?Kelvin
11. 11. List two ways volume is measured.water displacement, lXwXh
12. 12. How close a measurement is to the true value is_________.accuracy
13. 13. A student measured the length of his 3 lab partners' shoes. The lengths were 28.0 cm, 23.538 cm, and 25.68 cm. What is the total length?(using the correct # of S.F.)77.2 cm
14. 14. What is the importance of determining the correct # of Significant figures in a measurement?tells the precision of the measurement
15. 15. Solve (no calculator!): (4 X 102) X (1 X 108)4 X 1010
16. 16. Why do we use scientific notation?makes writing large or small #'s easier
17. 17. What is the function of a control in an experiment?gives standard for comparison
18. 18. What is Chemistry?study of matter and its changes
19. 19. Which piece of lab equipment measures volume most precisely?graduated cylinder
20. 20. What should you remember about your hair and footwear in a lab?pull hair back, no open-toed shoes
21. 21. Solve (no calculator!): (9 X 108)/(3 X 10-4)3 X 1012
22. 22. A graduated cylinder's smallest increments are in 5's. To what decimal place should you estimate?10ths place
23. 23. Which piece of lab equipment best holds liquids for heatingbeaker
24. 24. How does a scientific theory differ from a law?theories explain why things occur and laws are accepted facts about nature
25. 25. What is the systematic approach to problem-solving that uses conversion factors to convert from one unit to another?dimensional analysis

### Chemistry Unit 1 Scientific Method, Metrics and Scientific notation: QR Challenge

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### Chemistry Unit 1 Scientific Method, Metrics and Scientific notation: QR Challenge

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