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
4. Cut them out and place them around your class / school.
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!
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Question | Answer |
1. produces hydrogen ion when dissolved in water | acid | 2. produces hydroxide ion when dissolved in water | base | 3. taste bitter | base | 4. reacts with metals and carbonates | acids | 5. turns red litmus paper blue | base | 6. taste sour | acid | 7. turns blue litmus paper red | acid | 8. wearing away of a metal element due to a chemical reaction | corrosion | 9. ions containing both carbon and oxygen that react with acids | carbonates | 10. atom of hydrogen that has lost an electron; produced by acids in water | hydrogen ion | 11. low pH | acids | 12. high pH | bases | 13. an acid with a very low pH (0-4) | strong acid | 14. a base with a very high pH (10-14) | strong base | 15. feels slippery | base | 16. strength of a base | alkalinity | 17. potential for hydrogen | pH | 18. ranges from 0-14; measures the strength of acids or bases | pH scale | 19. reaction between an acid and base; produces water and salt | neutralization | 20. compound that changes color in the presence of an acid or base | indicator | 21. pH indicator that changes color when placed in an acid or base | litmus paper | 22. solution of mostly water | aqueous | 23. substance with pH of 7 | neutral |
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