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QR Challenge: Chemistry Final Exam 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. In the reaction N2 + 3H2 ® 2NH3, what is the mole ratio of nitrogen to ammonia?1:2
4. Calculate the molecular formula for a compound is K2Cr2O4 what is the empirical formula?KCrO2
5. Question 6 The coefficients in a chemical equation represent therelative numbers of moles of reactants and products
6. Question 7What is the molarity of a solution that contains 0.202 mole KCl in 7.98 L solution?
7. Question 8 Oxygen in nitrogen is an example of which solute-solvent combination?gas-gas
8. Question 9 To conduct electricity, a solution must containions
9. Question 10 Which of the following is likely to produce crystals if disturbed?a supersaturated solution or a concentrated solution
10. Question 11 In the expression like dissolves like, the word like refers to similarity in molecularpolarity
11. Question 12 As temperature increases, solubility of solids in liquidsincreases
12. Question 13 Which of the following is chloric acid?HClO HClO3
13. Question 14 Hydroxides of Group 1 metalsare all strong bases or are all acids
14. Question 15 The pH scale in general use ranges from0 to 14
15. Question 16 An electron-pair acceptor is aBronsted-Lowry base
16. Question 17 A water solution whose pH is 10 is alwaysbasic
17. Question 18 What is the hydroxide ion concentration of a solution whose pH is 12.402.5 X 10-2 M
18. Question 19 In the reaction HClO3 + NH3 NH4+ + ClO3–, the conjugate base of HClO3 isClO3-
19. Question 20 Convert the pressure 0.840 atm to mm Hg.638 mm Hg
20. Question 21 The combining of two nuclei to form one nucleus with a larger mass is called a ____________.Fusion
21. Question 22 An ice cube has fallen in warm water. Which way will heat flow?Into the ice cube

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_mass_of_2_moles_of_oxygen_atoms_is

Question 1 (of 21)

 


Chemistry Final Exam 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 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=In_the_reaction_N2_+_3H2_®_2NH3,_what_is_the_mole_ratio_of_nitrogen_to_ammonia?

Question 3 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Calculate_the_molecular_formula_for_a_compound_is_K2Cr2O4_what_is_the_empirical_formula?

Question 4 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_6_The_coefficients_in_a_chemical_equation_represent_the

Question 5 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_7

Question 6 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_8_Oxygen_in_nitrogen_is_an_example_of_which_solute-solvent_combination?

Question 7 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_9_To_conduct_electricity,_a_solution_must_contain

Question 8 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_10_Which_of_the_following_is_likely_to_produce_crystals_if_disturbed?

Question 9 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_11__In_the_expression_like_dissolves_like,_the_word_like_refers_to_similarity_in_molecular

Question 10 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_12_As_temperature_increases,_solubility_of_solids_in_liquids

Question 11 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_13_Which_of_the_following_is_chloric_acid?

Question 12 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_14_Hydroxides_of_Group_1_metals

Question 13 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_15__The_pH_scale_in_general_use_ranges_from

Question 14 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_16__An_electron-pair_acceptor_is_a

Question 15 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_17__A_water_solution_whose_pH_is_10_is_always

Question 16 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_18__What_is_the_hydroxide_ion_concentration_of_a_solution_whose_pH_is_12.40

Question 17 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_19__In_the_reaction_HClO3_+_NH3__NH4+_+_ClO3–,_the_conjugate_base_of_HClO3_is

Question 18 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_20__Convert_the_pressure_0.840_atm_to_mm_Hg.

Question 19 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_21__The_combining_of_two_nuclei_to_form_one_nucleus_with_a_larger_mass_is_called_a_____________.

Question 20 (of 21)

 


Chemistry Final Exam Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Question_22__An_ice_cube_has_fallen_in_warm_water.__Which_way_will_heat_flow?

Question 21 (of 21)