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QR Challenge: Acids and Bases and other 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. Q1 An Arrhenius acid gives up a _________.hydrogen ion
2. Q2 An Arrhenius base gives up a _________.hydroxide ion
3. Q3 A(n) _________ gives up a hydrogen ion to become a conjugate _______acid; base
4. Q4 A(n) _________ accepts a hydrogen ion to become a conjugate _______base; acid
5. Q5 In an acidic solution [H+] ____ [OH-].>
6. Q6 In a basic solution [H+] ____ [OH-].<
7. Q7 In a neutral solution [H+] ____ [OH-].=
8. Q8 Something with a pH of 3 is ______ (acidic/basic/neutral). acidic
9. Q9 Something with a pH of 7 is ______ (acidic/basic/neutral). neutral
10. Q10 Something with a pH of 13 is ______ (acidic/basic/neutral). basic
11. Q11 What is the hydronium concentration when the hydroxide concentration is 1x10^-5M?1x10^-9 M
12. Q12 What is the hydroxide concentration when the hydronium concentration is 2.5x10^-3M?4x10^-12 M
13. Q13 What is the pH when the pOH is 5.5?pOH = 8.5
14. Q14 What is the pOH when the pH is 12.8?pH = 1.2
15. Q15 What is the pH of a 0.0058 M hydroiodic acid solution?2.2
16. Q16 What is the pOH of a 0.0058 M hydroiodic acid solution?11.8
17. Q17 What is the pOH of a 8.3x10^-9 M calcium hydroxide solution?8.1
18. Q18 What is the pH of a 8.3x10^-9 M calcium hydroxide solution?5.9
19. Q19 What is the name of HClO3?chloric acid
20. Q20 What is the name of HClO4?perchloric acid
21. Q21 What is the name of HCl?hydrochloric acid
22. Q22 What is the name of HNO3?nitric acid
23. Q23 What is the formula of lithium hydroxide?LiOH
24. Q24 What is the formula of strontium hydroxide?Sr(OH)2
25. Q25 What is the formula of rubidium hydroxide?RbOH
26. Q26 What is the formula of barium hydroxide?Ba(OH)2
27. Q27 What are the formula for the 7 strong acids?HNO3, HCl, HI, HBr, HNO3, HClO3, HClO4
28. Q28 A solution with a pH of 3 has (more/less) hydrogen than hydroxide ions.more
29. Q29 A solution with a pH of 10 has (more/less) hydrogen than hydroxide ions.less
30. Q30 An acid will turn litmus paper _________.red
31. Q31 A base will turn litmus paper __________.blue
32. Q32 When a metal reacts with acid, ____________ is produced. hydrogen gas
33. Q33 A reaction between an acid and a base is called a _____________ reaction. neutralization
34. Q34 The products of a neutralization reaction are always __________ and ______.water and a salt
35. Q35 How many moles are in a 12.5 L of oxygen gas at 298K and 1.32 atm?0.67 mol
36. Q36 predict the products: Lithium and hydrochloric acidhydrogen gas and LiCl
37. Q37 predict the products: Rb + HBr --> ____ + ____ RbBr + H2
38. Q38 predict the products: rubidium hydroxide and hydroiodic acid H2O + RbI
39. Q39 predict the products: sulfuric acid and strontium hydroxide SrSO4 + 2H2O
40. Q40 50 ml of 0.3 M KOH are required to titrate 30 mL of perchloric acid. What is the molarity of the perchloric acid?0.5 M

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q1_An_Arrhenius_acid_gives_up_a__________.

Question 1 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q2_An_Arrhenius_base_gives_up_a__________.

Question 2 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q3_A(n)___________gives_up_a_hydrogen_ion_to_become_a_conjugate________

Question 3 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q4_A(n)___________accepts_a_hydrogen_ion_to_become_a_conjugate________

Question 4 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q5_In_an_acidic_solution_[H+]______[OH-].

Question 5 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q6_In_a_basic_solution_[H+]______[OH-].

Question 6 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q7_In_a_neutral_solution_[H+]______[OH-].

Question 7 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q8_Something_with_a_pH_of_3_is________(acidic/basic/neutral).

Question 8 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q9_Something_with_a_pH_of_7_is________(acidic/basic/neutral).

Question 9 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q10_Something_with_a_pH_of_13_is________(acidic/basic/neutral).

Question 10 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q11_What_is_the_hydronium_concentration_when_the_hydroxide_concentration_is_1x10^-5M?

Question 11 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q12_What_is_the_hydroxide_concentration_when_the_hydronium_concentration_is_2.5x10^-3M?

Question 12 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q13_What_is_the_pH_when_the_pOH_is_5.5?

Question 13 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q14_What_is_the_pOH_when_the_pH_is_12.8?

Question 14 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q15_What_is_the_pH_of_a_0.0058_M_hydroiodic_acid_solution?

Question 15 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q16_What_is_the_pOH_of_a_0.0058_M_hydroiodic_acid_solution?

Question 16 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q17_What_is_the_pOH_of_a_8.3x10^-9_M_calcium_hydroxide_solution?

Question 17 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q18_What_is_the_pH_of_a_8.3x10^-9_M_calcium_hydroxide_solution?

Question 18 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q19_What_is_the_name_of_HClO3?

Question 19 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q20_What_is_the_name_of_HClO4?

Question 20 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q21_What_is_the_name_of_HCl?

Question 21 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q22_What_is_the_name_of_HNO3?

Question 22 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q23_What_is_the_formula_of_lithium_hydroxide?

Question 23 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q24_What_is_the_formula_of_strontium_hydroxide?

Question 24 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q25_What_is_the_formula_of_rubidium_hydroxide?

Question 25 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q26_What_is_the_formula_of_barium_hydroxide?

Question 26 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q27_What_are_the_formula_for_the_7_strong_acids?

Question 27 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q28_A_solution_with_a_pH_of_3_has_(more/less)_hydrogen_than_hydroxide_ions.

Question 28 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q29_A_solution_with_a_pH_of_10_has_(more/less)_hydrogen_than_hydroxide_ions.

Question 29 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q30_An_acid_will_turn_litmus_paper__________.

Question 30 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q31_A_base_will_turn_litmus_paper___________.

Question 31 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q32_When_a_metal_reacts_with_acid,______________is_produced.

Question 32 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q33_A_reaction_between_an_acid_and_a_base_is_called_a_______________reaction.

Question 33 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q34_The_products_of_a_neutralization_reaction_are_always____________and_______.

Question 34 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q35_How_many_moles_are_in_a_12.5_L_of_oxygen_gas_at_298K_and_1.32_atm?

Question 35 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q36__predict_the_products:_Lithium_and_hydrochloric_acid

Question 36 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q37_predict_the_products:_Rb_+_HBr_-->______+_____

Question 37 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q38_predict_the_products:_rubidium_hydroxide_and_hydroiodic_acid

Question 38 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q39_predict_the_products:_sulfuric_acid_and_strontium_hydroxide

Question 39 (of 40)

 


Acids and Bases and other review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Q40_50_ml_of_0.3_M_KOH_are_required_to_titrate_30_mL_of_perchloric_acid.__What_is_the_molarity_of_the_perchloric_acid?

Question 40 (of 40)