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
4. Cut them out and place them around your class / school.
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!
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Question | Answer |
| 1. 1. Under what conditions does an ionic bond conduct electricity? 2. How can you know what type of bond will form between two atoms? | when dissolved in water, look at elements | 2. 3. Why are the electrons in a metallic bond "delocalized"? 4.How can you know the oxidation # of a transition metal? | they move freely around the metal cations, Roman numerals | 3. 5. Why do elements form chemical bonds? 6. How does an atom in Group 1 and an atom in Group 15 form a chemical bond?(tell how many electrons are exchanged) | to achieve an octet, atom in group 1 gives away 1 electron and Group 15 gains 3 electrons | 4. 7. Which compound (of the 3 we discussed) has a low melting point and what does this mean about its bond? 8.Why does Sc form a +3 ion? (What orbitals are electrons lost from?) | covalent/weak bond, loses 2 electrons from s-level and 1 from d-level | 5. 9. Write the formula for KNO3. 10. Write the name for Mg3N2. | Potassium nitrate, magnesium nitride | 6. 11. What is the suffix at the end of the anion for a simple binary compound? 12. Why is NaF2 incorrect? | -ide, Na only loses 1 electron and has a +1 charge | 7. 13. Name this compound: BaOH2 14. The more reactive an atom, the higher its potential energy. Does Ne or F have higher potential energy? Explain. | Barium hydroxide, F because it is very reactive and Ne is stable | 8. 15. What ion will Al form and why? 16.Name this compound: PbF2 | Al +3 because it loses 3 electrons, Lead(II) fluoride | 9. 17. Why are most ionic compounds "electrolytes"? 18. Write the formula formed when Cs and N bond. | They conduct current when dissolved in water, Cs3N | 10. 19. What is the overall charge of a compound after it is bonded? 20. Name this compound: Sr(NO3)2 | neutral, Strontium nitrate | 11. 21. Write the formula for Sodium sulfide 22. Draw an electron-dot diagram for the bond between K and I. | Na2S, KI (1 electron given and 1 taken) | 12. 23. What is a polyatomic ion? 24. How does sulfite differ from sulfate? | group of 2 or more nonmetal atoms that has a charge, sulfite has 1 fewer Oxygen atom | 13. 25. How does an atom get an oxidation number? 26. How does a cation differ from an anion? | from the # of electrons lost or gained in bonding, cation is positive ion and anion is negative ion | 14. 27. Write the formula for Copper(II)acetate. 28. Covalent compounds are called __________. | Cu(C2H3O2)molecules | 15. 29. Brass is a mixture of Z and Cu. This is called a(n)___________.30. Pr is an element with the configuration [Xe]4f36s2. Explain how it gets a charge of +3 | alloy,loses 3 f-orbital electrons |
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