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QR Challenge: iGCSE Chemistry Definitions

Created using the ClassTools QR Treasure Hunt Generator

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. A substance that forms H+ ions when it is dissolved in waterAcid
2. The minimum energy that must be provided before a reaction can take placeActivation Energy
3. A negatively charged ionAnion
4. A substance that neutralises an acidBase
5. The average energy associated with breaking or forming a particular covalent bondBond energy
6. A method for determining energy changes in reactionsCalorimetry
7. A chemical that speeds up a reaction but remains unchanged at the endCatalyst
8. A negatively charged electrodeCathode
9. A bond formed when electrons are sharedCovalent
10. A reaction in which one element takes the place of another in a compoundDisplacement
11. Breaking down a compound using electricityElectrolysis
12. A type of reaction when energy is taken in from the surroundingsEndothermic
13. A chemical reaction where the forwards and backwards reactions can both occurEquilibrium
14. The sum of all the atomic masses of the atoms in a formulaFormula mass
15. A vertical column of elements in the Periodic TableGroup
16. The Group 7 elementsHalogens
17. Substance which changes colour in an acid or alkaliIndicator
18. A bond that involves the transfer of electronsIonic
19. Atoms of the same element that contain different numbers of neutronsIsotopes
20. The total number of protons and neutrons in an atomMass number
21. A reaction in which an acid reacts with a base to produce salt plus waterNeutralisation
22. A mineral from which a metal may be extractedOre
23. The addition of oxygen or loss of electrons in a chemical reactionOxidation
24. A row in the Periodic TablePeriod
25. The chemicals taking part in a chemical reactionReactants
26. The loss of oxygen or gain of electronsReduction
27. A substance that dissolves in a solvent to form a solutionSolute
28. The breaking down of a compound by heatThermal Decomposition
29. An accurate method for calculating the concentration of an acid or alkali solution in a neutralisation reactionTitration
30. Amount of substance produced in a chemical reactionYield

 



iGCSE Chemistry Definitions: QR Challenge

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