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QR Challenge: Ac Chem Chp 12 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. 1) A solution is created by dissolving 55.0g KCl in water at 100C. It is then cooled to 60C. A) When does precipitate start to form? B) At 60C, how much is dissolved? C) At 60C, how much is solid?A) 95 C B) 45.8 g C) 9.2 g
2. 2) Find molarity given 6.5 L of 5.0 mol HCl.0.77 M
3. 3) Find moles given 552 mL of 10.0 M H2O.5.52 mol
4. 4) Find molarity given 31.2 g HNO3 in 175 mL solution.2.83 M
5. 5) Find the mass of solute needed to create 7.80 M H2S in 0.975 L.259 g
6. 6) What volume of 8.00 M stock HCl is needed to create 0.500 L of 6.50 M HCl?0.406 L
7. 7) Using 3Na2O + 2AlP -> 2Na3P + Al2O3, if 633 mL of 7.00 M Na2O is used, what mass of Na3P will be produced?295 g

 


Ac Chem Chp 12 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=1)_A_solution_is_created_by_dissolving_55.0g_KCl_in_water_at_100C._It_is_then_cooled_to_60C._A)_When_does_precipitate_start_to_form?_B)_At_60C,_how_much_is_dissolved?_C)_At_60C,_how_much_is_solid?

Question 1 (of 7)

 


Ac Chem Chp 12 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=2)_Find_molarity_given_6.5_L_of_5.0_mol_HCl.

Question 2 (of 7)

 


Ac Chem Chp 12 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=3)_Find_moles_given_552_mL_of_10.0_M_H2O.

Question 3 (of 7)

 


Ac Chem Chp 12 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=4)_Find_molarity_given_31.2_g_HNO3_in_175_mL_solution.

Question 4 (of 7)

 


Ac Chem Chp 12 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=5)_Find_the_mass_of_solute_needed_to_create_7.80_M_H2S_in_0.975_L.

Question 5 (of 7)

 


Ac Chem Chp 12 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=6)_What_volume_of_8.00_M_stock_HCl_is_needed_to_create_0.500_L_of_6.50_M_HCl?

Question 6 (of 7)

 


Ac Chem Chp 12 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=7)_Using_3Na2O_+_2AlP_->_2Na3P_+_Al2O3,_if_633_mL_of_7.00_M_Na2O_is_used,_what_mass_of_Na3P_will_be_produced?

Question 7 (of 7)