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QR Challenge: SNC2D Chemistry 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. What is the common name for ‘Group 2’ in the periodic table?Alkaline Earth Metals
2. 2. Draw the Lewis dot diagram for the elements Calcium & Argon A
3. 3. Water has a boiling point of 100C. Is this a chemical or physical property? Physical
4. 4. Identify whether the following are chemical or physical changes: (A) Hand sanitizer evaporating on your hand (B) Milk going sour (C) Mixing flour, salt and sugar together in a bowl. (A) physical (B) Chemical (C) Physical
5. 5. Are the following molecules, compounds, or both: (A) F2 (B) NaOH (A) Molecule (B) Both
6. 6. Provide the name of the following compounds, are they ionic or molecular? (A) NaBr (B) OCl2 (A) Sodium Bromide - IONIC (B) Oxygen Dichloride- MOLECULAR
7. 7. Provide the name of the following compounds, are they ionic or molecular? (A) P2O5 (B) Mn(NO3)7 (A) Diphosphorus pentoxide - MOLECULAR (B) manganese (VII) nitrate- IONIC
8. 8. Write the formula and name the following elements form (A) Sulfur & Magnesium (B) Nitrate & Calcium (A) Magnesium sulfide (MgS) (B) calcium nitrate (Ca(NO3)2)
9. 9. In your own words, state the law of conservation of mass. The mass of the reactants is the same as the mass of the products/Number of atoms in the reactants are the same as the number of atoms in the products.
10. 10. List all 7 diatomic elements: H,O,Br,F,I,N,Cl
11. 11. Balance the following equation: ____NH4NO2 → ____N2 + ____H2O NH4NO2 → 2 + 2 2O
12. (A) Potassium + Chlorine → Potassium chloride : 2K + Cl2 → 2KCl - SYNTHESIS
13. 13. Write the word and balanced equation for when sodium metal reacts with iron (II) chloride. What type of reaction is this? Sodium + iron (II) chloride → Sodium chloride + Iron
14. 14. Write the word and balanced equation for when sodium phosphate and calcium chloride react. What type of reaction is this? Sodium phosphate + calcium chloride → calcium phosphate + sodium chloride 2Na3PO4 + 3CaCl2 → 6NaCl + Ca3(PO4)2 - DOUBLE DISPLACEMENT
15. 15. True or false: Acids are generally bitter and slippery, whereas bases are sour and corrosive False
16. 16. Name the following, identify whether it is an acid or a base: (A) Co(OH)2 (B) H2CO3 (A) Cobalt (II) hydroxide - BASE (B) Hydrocyanic acid
17. 17. Provide formulas for the following, identify whether it is an acid or a base: (A) hydroselenic acid (B) Nitrous acid (A) H2S - ACID (B) HNO2- ACID
18. 18. Write the word and balanced chemical equation for when Ca(OH)2 and H3PO4 react. What type of reaction is this? Calcium hydroxide + Phosphoric acid → water + calcium phosphate

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=1._What_is_the_common_name_for_‘Group_2’_in_the_periodic_table?

Question 1 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=2._Draw_the_Lewis_dot_diagram_for_the_elements_Calcium_&_Argon

Question 2 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=3._Water_has_a_boiling_point_of_100C._Is_this_a_chemical_or_physical_property?

Question 3 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=4._Identify_whether_the_following_are_chemical_or_physical_changes:_(A)_Hand_sanitizer_evaporating_on_your_hand_(B)_Milk_going_sour_(C)_Mixing_flour,_salt_and_sugar_together_in_a_bowl.

Question 4 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=5._Are_the_following_molecules,_compounds,_or_both:_(A)_F2_(B)_NaOH

Question 5 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=6._Provide_the_name_of_the_following_compounds,_are_they_ionic_or_molecular?__(A)_NaBr_(B)_OCl2

Question 6 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=7._Provide_the_name_of_the_following_compounds,_are_they_ionic_or_molecular?_(A)_P2O5_(B)_Mn(NO3)7

Question 7 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=8._Write_the_formula_and_name_the_following_elements_form_(A)_Sulfur_&_Magnesium_(B)_Nitrate_&_Calcium

Question 8 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=9._In_your_own_words,_state_the_law_of_conservation_of_mass.

Question 9 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=10._List_all_7_diatomic_elements:

Question 10 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=11._Balance_the_following_equation:_____NH4NO2_→_____N2_+_____H2O

Question 11 (of 18)

 


SNC2D Chemistry Review : QR Challenge

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

Question 12 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=13._Write_the_word_and_balanced_equation_for_when_sodium_metal_reacts_with_iron_(II)_chloride._What_type_of_reaction_is_this?

Question 13 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=14._Write_the_word_and_balanced_equation_for_when_sodium_phosphate_and_calcium_chloride_react._What_type_of_reaction_is_this?

Question 14 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=15._True_or_false:_Acids_are_generally_bitter_and_slippery,_whereas_bases_are_sour_and_corrosive

Question 15 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=16._Name_the_following,_identify_whether_it_is_an_acid_or_a_base:__(A)_Co(OH)2_(B)_H2CO3

Question 16 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=17._Provide_formulas_for_the_following,_identify_whether_it_is_an_acid_or_a_base:_(A)_hydroselenic_acid_(B)_Nitrous_acid

Question 17 (of 18)

 


SNC2D Chemistry Review : QR Challenge

https://www.classtools.net/QR/decode.php?text=18._Write_the_word_and_balanced_chemical_equation_for_when_Ca(OH)2_and_H3PO4_react._What_type_of_reaction_is_this?

Question 18 (of 18)