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QR Challenge: Acids/Bases

Created using the ClassTools QR Treasure Hunt Generator

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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

3. Print out the QR codes.

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.

Questions / Answers (teacher reference)

Question

Answer

1. produces hydrogen ion when dissolved in wateracid
2. produces hydroxide ion when dissolved in waterbase
3. taste bitterbase
4. reacts with metals and carbonatesacids
5. turns red litmus paper bluebase
6. taste souracid
7. turns blue litmus paper redacid
8. wearing away of a metal element due to a chemical reactioncorrosion
9. ions containing both carbon and oxygen that react with acidscarbonates
10. atom of hydrogen that has lost an electron; produced by acids in waterhydrogen ion
11. low pHacids
12. high pHbases
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 slipperybase
16. strength of a basealkalinity
17. potential for hydrogenpH
18. ranges from 0-14; measures the strength of acids or basespH scale
19. reaction between an acid and base; produces water and saltneutralization
20. compound that changes color in the presence of an acid or baseindicator
21. pH indicator that changes color when placed in an acid or baselitmus paper
22. solution of mostly wateraqueous
23. substance with pH of 7neutral

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=produces_hydrogen_ion_when_dissolved_in_water

Question 1 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=produces_hydroxide_ion_when_dissolved_in_water

Question 2 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=taste_bitter

Question 3 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=reacts_with_metals_and_carbonates

Question 4 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=turns_red_litmus_paper_blue

Question 5 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=taste_sour

Question 6 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=turns_blue_litmus_paper_red

Question 7 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=wearing_away_of_a_metal_element_due_to_a_chemical_reaction

Question 8 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=ions_containing_both_carbon_and_oxygen_that_react_with_acids

Question 9 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=atom_of_hydrogen_that_has_lost_an_electron;_produced_by_acids_in_water

Question 10 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=low_pH

Question 11 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=high_pH

Question 12 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=an_acid_with_a_very_low_pH_(0-4)

Question 13 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=a_base_with_a_very_high_pH_(10-14)

Question 14 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=feels_slippery

Question 15 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=strength_of_a_base

Question 16 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=potential_for_hydrogen

Question 17 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=ranges_from_0-14;_measures_the_strength_of_acids_or_bases

Question 18 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=reaction_between_an_acid_and_base;_produces_water_and_salt

Question 19 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=compound_that_changes_color_in_the_presence_of_an_acid_or_base

Question 20 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=pH_indicator_that_changes_color_when_placed_in_an_acid_or_base

Question 21 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=solution_of_mostly_water

Question 22 (of 23)

 


Acids/Bases: QR Challenge

https://www.classtools.net/QR/decode.php?text=substance_with_pH_of_7

Question 23 (of 23)