QR Challenge: Atomic Theory Timeline

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

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

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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!

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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.

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Questions / Answers (teacher reference)

Question	Answer
1. Around 400BC there are three scientists noted for working with the idea of an atom. Who were they?	Aristotle, Plato and Democritus.
2. What was the nickname of the scientist of 1789?	Joseph Proust
3. what was the law that Joseph Proust defined and what did it say?	The Law of Definite Proportions says that all compounds are made of similar elements in definite proportions.
4. Who did an experiment with gold foil?	Ernest Rutherford.
5. What did Rutherford discover?	The atom is mostly empty space with a positive nucleus.
6. Who was the other scientist in 1909 and what did he discover?	The charge of the electron.
7. What did the planet model of 1913 look like?	Nucleus in center and rings around.
8. What is the name of the scientist from 1802?	John Dalton
9. What was Dalton's atomic theory?	All particles are made of atoms that cannot be divided.
10. Who discovered the neutron?	James Chadwick

 

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