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QR Challenge: iGCSE Chemistry Definitions

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. 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

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

Question 1 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 2 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 3 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 4 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 5 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 6 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 7 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 8 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 9 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 10 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 11 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 12 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 13 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 14 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 15 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_Group_7_elements

Question 16 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 17 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 18 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 19 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 20 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 21 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 22 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 23 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 24 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 25 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 26 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 27 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 28 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 29 (of 30)

 


iGCSE Chemistry Definitions: QR Challenge

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

Question 30 (of 30)