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QR Challenge: Chem Fnal Review

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. The mass of 2 moles of oxygen atoms is32.00 g
2. The lowest whole-number ratio of elements in a compound is called theempirical formula
3. Calculate the molecular formula for a compound is N2O4 what is the empirical formula?N2O
4. The coefficients in a chemical equation represent therelative numbers of moles of reactants and products
5. Carbon in Oxygen is an example of which solute-solvent combination?gas-gas
6. To conduct electricity, a solution must containions
7. Which of the following is likely to produce crystals if disturbed? a supersaturated solution or a concentrated solutionsuper
8. In the expression like dissolves like, the word like refers to similarity in molecularpolarity
9. As temperature increases, solubility of solids in liquidsincreases
10. Which of the following is phosphoric acid HPO4 orH3PO4? H3PO4
11. Hydroxides are bases or acids. bases
12. The pH scale in general use ranges from0 to 14
13. An electron-pair acceptor is aBronsted-Lowry base
14. A water solution whose pH is 11 is alwaysbasic
15. What is the hydrogen ion concentration of a solution whose pH is 11.7?1.9 X 10-12 M
16. In the reaction CH3COOH + H2O → H3O+ + CH3COO -, the conjugate base of CH3COOH isCH3COO-
17. Convert the pressure 0.970 atm to mm Hg.737 mm Hg
18. The combining of two nuclei to form one nucleus with a larger mass is called a ____________.Fusion
19. Which way will heat flow?hot to cold

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-mass-of-2-moles-of-oxygen-atoms-is

Question 1 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-lowest-whole-number-ratio-of-elements-in-a-compound-is-called-the

Question 2 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Calculate-the-molecular-formula-for-a-compound-is-N2O4-what-is-the-empirical-formula?

Question 3 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-coefficients-in-a-chemical-equation-represent-the

Question 4 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Carbon-in-Oxygen-is-an-example-of-which-solute-solvent-combination?

Question 5 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=To-conduct-electricity,-a-solution-must-contain

Question 6 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which-of-the-following-is-likely-to-produce-crystals-if-disturbed?-a-supersaturated-solution-or-a-concentrated-solution

Question 7 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=In-the-expression-like-dissolves-like,-the-word-like-refers-to-similarity-in-molecular

Question 8 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=As-temperature-increases,-solubility-of-solids-in-liquids

Question 9 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which-of-the-following-is-phosphoric-acid-HPO4 orH3PO4?

Question 10 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Hydroxides-are--bases-or-acids.

Question 11 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-pH-scale-in-general-use-ranges-from

Question 12 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=An-electron-pair-acceptor-is-a

Question 13 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-water-solution-whose-pH-is-11-is-always

Question 14 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-hydrogen-ion-concentration-of-a-solution-whose-pH-is-11.7?

Question 15 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=In-the-reaction-CH3COOH--+--H2O--→--H3O+--+--CH3COO--,-the-conjugate-base-of-CH3COOH-is

Question 16 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Convert-the-pressure-0.970-atm-to-mm-Hg.

Question 17 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-combining-of-two-nuclei-to-form-one-nucleus-with-a-larger-mass-is-called-a-____________.

Question 18 (of 19)

 


Chem Fnal Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which-way-will-heat-flow?

Question 19 (of 19)