QR Challenge: The Chemistry of Thanksgiving

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

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.

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. 1. What is the chemical compound in turkey that will make you sleepy?	L-tryptophan
2. 2. The internal temperature of the turkey should be cooked to a temperature of 180 degrees F. What is that in degrees C?	82
3. 3. Which chloride compound is located in Stovetop Stuffing Mix and what is the chemical formula for this chloride?	potassium chloride, KCl
4. 4. What is the propellant used in Reddi Whip and what is the chemical formula for the propellant?	Nitrous Oxide N2O
5. 5. What is the IUPAC name for the propellant used in Reddi Whip?	Dinitrogen Monoxide
6. 6. What chemical compound does yeast give off to make your bread dough rise?	Carbon Dioxide, CO2
7. 7. Once Thanksgiving Dinner is over and you have eaten way too much, you reach for Pepto Bismol. What is the active ingredient in it?	Bismuth Subsalicylate
8. 8. In the event the Pepto Bismol does not work, try an antacid. The best to use is Baking Soda. What is the chemical name and formula for Baking Soda?	Sodium Hydrogen Carbonate, NaHCO3
9. 9. Sodium is a common ingredient in Pillsbury Grands Buttermilk Biscuits. What other metal is located in the baking powder of the biscuits?	aluminum
10. 10. Watch the following video, https://www.youtube.com/watch?v=9R-wielABok, and tell me why the pop-up turkey thermometer pop up at the right time?	the metal used to soder the spring melts.
11. 11. Watch the following video, https://www.youtube.com/watch?v=9R-wielABok, and tell me what the chemical reaction is between baking soda and milk (or any acid)?	Baking Soda + Acid produces Carbonic Acid and Salt
12. 12. Watch the following video, https://www.youtube.com/watch?v=zfTQY_9b9ec, and tell me what chemical process allows the process of brining to work its magic?	Osmosis
13. 13. What compound causes the cranberry sauce to be thick and jelly-like?	Pectin
14. 14. What was the date that A Charlie Brown Thanksgiving was initially released?	November 20, 1973
15. 15. Who is credited with making Thanksgiving a National Holiday?	Sarah Hale
16. 16. The individual who is credited with making Thanksgiving a National Holiday was also an American writer and influential editor. What nursery rhyme did they author?	Mary Had a Little Lamb
17. 17. The original Thanksgivings were a means to give thanks to whom?	God