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Quantum Mechanics Grade 12 Review Guaranteed Answers Who introduced the idea that particles could behave like waves? ️Louis de Broglie What theory did Erwin Shrodinger produce? ️the electron can only have certain quantized energies because of the requirement for only whole number of wavel...

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  • October 11, 2024
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Quantum Mechanics Grade 12 Review Guaranteed Answers

Who introduced the idea that particles could behave like waves? ✔️Louis de Broglie



What theory did Erwin Shrodinger produce? ✔️the electron can only have certain quantized energies
because of the requirement for only whole number of wavelengths for the electron wave (nodes)



Who and what discovered the Heisenberg Uncertainty Principle? ✔️Werner Heisenberg discovered the
principle that states it is impossible to simultaneously know exact position and speed of a particle
(specifically electrons)



What was Dalton's atomic theory/model? ✔️Dalton produced the billard ball model. His theory states
matter is composed of indestructible, indivisible atoms, which are identical one element, but different
from other elements.



How did JJ Thomson contribute to the atomic theory? ✔️JJ Thomson created the plum pudding model.
He experimented with cathode ray tubes to show that all atoms contain tiny negatively charged
electrons with embedded positive material.



What experiment did Rutherford conduct? What atomic model did it help create? ✔️Gold foil
experiment that helped create the nuclear model. Rutherford discovered that atoms are mostly empty
space with a tiny, dense, positively charged nucleus.



How did Rutherford know that the nucleus was positively charged? ✔️From his experiment, Rutherford
drew the conclusions that most alpha particles pass through the foil, however a small handful of atoms
were deflected as they passed through the foil. This proved that they repelled the positive nucleus of
the foil.



What did Niels Bohr discover? ✔️Electrons travel around the nucleus in orbits (solar system-bohr
model). Explains how electrons can have stable orbits around the nucleus.

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