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QR Challenge: Scientists of Atomic Theory

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. What’s wrong with Dalton’s model? 1.Atoms are divisible 2. made up of protons/neutrons + electrons 3. no electrons aaaa.
2. Elements are composed of tiny indivisible particles called atoms..
3. Atoms of the same elements are identical.
4. Atoms of different elements are different.
5. Atoms of different elements combine together to create a compound.
6. In a chemical reaction, atoms are rearranged, but not created or destroyed.
7. What’s wrong with Thomson’s model? 1. Doesn't explain neutral atom 2. electrons should be outer 3. missing nucleus in the center.
8. “Plum pudding model”= positively charged spheres atoms with negatively charged electrons scattered throughout.
9. Plum Pudding model (This model was wrong because it’s missing a nucleus in the center).
10. Cathode Ray Tube (CRT) Experiment = lead to the discovery of the electrons.
11. What’s wrong with Rutherford’s model? 1. electrons do not spiral 2. neutrons 3. energy levels.
12. Rutherford shot alpha particles ( positively charged) through a thin layer of golf foil.
13. Rutherford predicted that the alpha particles would travelstraight through the gold atoms. Most alpha particles did passed straight through the gold foil, however, a few alpha particles were deflected because of a small dense nucleus in the center while most of the atom’s volume is empty space.
14. What’s wrong with Bohr’s model? 1. electrons do not orbit around nucleus like planets
15. Bohr’s model:electrons orbits the nucleus just like how the planets orbit the sun.
16. In Bohrs model,Electrons are restricted to certain fixed energy level.

 


Scientists of Atomic Theory: QR Challenge

https://www.classtools.net/QR/decode.php?text=What’s_wrong_with_Dalton’s_model?_1.Atoms_are_divisible_2._made_up_of_protons/neutrons_+_electrons_3._no_electrons

Question 1 (of 16)

 


Scientists of Atomic Theory: QR Challenge

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

Question 2 (of 16)

 


Scientists of Atomic Theory: QR Challenge

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

Question 3 (of 16)

 


Scientists of Atomic Theory: QR Challenge

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

Question 4 (of 16)

 


Scientists of Atomic Theory: QR Challenge

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

Question 5 (of 16)

 


Scientists of Atomic Theory: QR Challenge

https://www.classtools.net/QR/decode.php?text=In_a_chemical_reaction,_atoms_are_rearranged,_but_not_created_or_destroyed

Question 6 (of 16)

 


Scientists of Atomic Theory: QR Challenge

https://www.classtools.net/QR/decode.php?text=What’s_wrong_with_Thomson’s_model?_1._Doesn't_explain_neutral_atom_2._electrons_should_be_outer_3._missing_nucleus_in_the_center

Question 7 (of 16)

 


Scientists of Atomic Theory: QR Challenge

https://www.classtools.net/QR/decode.php?text=“Plum_pudding_model”=_positively_charged_spheres_atoms_with_negatively_charged_electrons_scattered_throughout

Question 8 (of 16)

 


Scientists of Atomic Theory: QR Challenge

https://www.classtools.net/QR/decode.php?text=Plum_Pudding_model_(This_model_was_wrong_because_it’s_missing_a_nucleus_in_the_center)

Question 9 (of 16)

 


Scientists of Atomic Theory: QR Challenge

https://www.classtools.net/QR/decode.php?text=Cathode_Ray_Tube_(CRT)_Experiment_=_lead_to_the_discovery_of_the_electrons

Question 10 (of 16)

 


Scientists of Atomic Theory: QR Challenge

https://www.classtools.net/QR/decode.php?text=What’s_wrong_with_Rutherford’s_model?_1._electrons_do_not_spiral_2._neutrons_3._energy_levels

Question 11 (of 16)

 


Scientists of Atomic Theory: QR Challenge

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

Question 12 (of 16)

 


Scientists of Atomic Theory: QR Challenge

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

Question 13 (of 16)

 


Scientists of Atomic Theory: QR Challenge

https://www.classtools.net/QR/decode.php?text=What’s_wrong__with_Bohr’s_model?

Question 14 (of 16)

 


Scientists of Atomic Theory: QR Challenge

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

Question 15 (of 16)

 


Scientists of Atomic Theory: QR Challenge

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

Question 16 (of 16)