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. Part I: How many grams of potassium iodide can be produced by the synthesis reaction of 150. grams of iodine and 45.6 grams of potassium? Part II: How many grams of the excess reactant will be left over? | 194 g; 2.00 g | 2. Part I: How many grams of silver chloride can be produced by the reaction of 17.0 grams of silver nitrate and 37.8 grams of sodium chloride? Part II: Super challenge question - How many cubic centimeters of the excess reactant will be left over if the density of sodium chloride is known to be 4.1 g/cm3 and the density of silver chloride is known to be 6.3 g/cm3? | 14.4 grams;7.78 cm3 sodium chloride | 3. Identify the species being oxidized or reduced in the following reaction:2 As (s) + 3 Cl2 (g) 2 AsCl3 | Arsenic - oxidized; chlorine - reduced | 4. Determine the oxidation number of carbon in carbonic acid. | +4 | 5. What is the oxidation number of nitrogen in elemental nitrogen gas? | 0 |
Part I: How many grams of potassium iodide can be produced by the synthesis reaction of 150. grams of iodine and 45.6 grams of potassium? Part II: How many grams of the excess reactant will be left over?&choe=UTF-8
Question 1 (of 5)
Part I: How many grams of silver chloride can be produced by the reaction of 17.0 grams of silver nitrate and 37.8 grams of sodium chloride? Part II: Super challenge question - How many cubic centimeters of the excess reactant will be left over if the density of sodium chloride is known to be 4.1 g/cm3 and the density of silver chloride is known to be 6.3 g/cm3?&choe=UTF-8
Question 2 (of 5)
Identify the species being oxidized or reduced in the following reaction:2 As (s) + 3 Cl2 (g) 2 AsCl3&choe=UTF-8
Question 3 (of 5)
Determine the oxidation number of carbon in carbonic acid.&choe=UTF-8
Question 4 (of 5)
What is the oxidation number of nitrogen in elemental nitrogen gas?&choe=UTF-8
Question 5 (of 5)
