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QR Challenge: Review for Chemistry Post Test

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. What is the number representing the strongest base on the pH scale?14
2. What is the number representing the strongest acid on the pH scale?0
3. What is the range of the pH scale?14 Explain how you got your answer.
4. What number on the pH scale represents neutral substances?7
5. How would you neutralize an acid?add a base
6. How would you neutralize a base?add an acid
7. How would you dilute an acid or base?add water
8. Write the definition for an independent variable. Now give an example.answers will vary
9. Write the definition for a dependent variable. Now give an example.answers will vary.
10. What is the difference between neutralization and dilution?Dilution is adding water, neutralization is adding a base or an acid.
11. How would you change an acid's pH to neutral?answers will vary
12. What two words must be included in an hypothesis?if and then
13. The scientific question is...is vinegar conducive to plant growth? How could you test to find out?answers will vary
14. Why do scientists graph data?to look for patterns
15. What is needed for experimental results to be reliable?one dependent variable, independent variable(s), multiple controlled variables, and it needs to be tested at least three times

 


Review for Chemistry Post Test: QR Challenge

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

Question 1 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 2 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 3 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 4 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 5 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 6 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 7 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 8 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 9 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 10 (of 15)

 


Review for Chemistry Post Test: QR Challenge

https://www.classtools.net/QR/decode.php?text=How_would_you_change_an_acid's_pH_to_neutral?

Question 11 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 12 (of 15)

 


Review for Chemistry Post Test: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_scientific_question_is...is_vinegar_conducive_to_plant_growth?__How_could_you_test_to_find_out?

Question 13 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 14 (of 15)

 


Review for Chemistry Post Test: QR Challenge

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

Question 15 (of 15)