Early Thoughts
Dalton's atomic theory was supported by this scientific law
What is the Law of Multiple Proportions?
The reason Bohr's model worked well for hydrogen but not for larger atoms
What are interactions between electrons and energy-level splitting?
This scientist discovered that light had properties of both particles and waves
Who was de Broglie?
Chadwick's major contribution to the atomic model
What was the discovery of the neutron?
Hanks
What is a Tom?
J.J. Thomson discovered the electron using this experiment
What was the Cathode ray tube experiment?
Rutherford's gold foil experiment provided evidence for this part of the atom
What is the dense, positively charged nucleus?
The difference in electron behavior between Bohr's and Schrodinger's models
What is electrons exist in fixed orbits in Bohr's model, but are found in probability-based orbitals in Schrodinger's?
This scientist bombarded beryllium with alpha particles and detected a neutral stream of particles that later proved capable of knocking protons out of atoms
Who was Chadwick?
Xenon
What is an atom?
One major limitation of Dalton's atomic model
What is atoms are not indivisible or atoms of the same element are not all identical?
Rutherford concluded that this must be true because most alpha particles passed straight through the gold foil, with only a few deflected sharply
What is the atom is mostly empty space with a small, dense, positively charged nucleus?
This atomic model explains why when a beam of electrons is passed through a crystal it forms a diffraction pattern on a screen
What is Schrodinger's model?
The reason neutrons were so difficult to detect
What is they were electrically neutral and so could not be affected by electrical or magnetic fields?
Jones
What is a Tom?
These ancient philosophers first proposed the idea of indivisible particles called atoms
Who were Leucippus and Democritus?
One way that Rutherford's model improved on Thomson's plum pudding model
Heisenberg's uncertainty principle states this
What is it is impossible to know both the exact position and momentum of an electron simulatenously?
The discrete lines of colored light emitted by hydrogen gas support this conclusion about atomic structure
What is that energy levels are quantized?
Sandler
What is an Adam?
Thomson's plum pudding model depicted the structure of the atom in this way
What is negatively charged electrons suspended in a positively charged gel?
Bohr's model was able to explain this
This scientist proposed that electrons behaved as both particles and waves
Who was Schrodinger?
One reason why the discovery of the neutron was important
What is it explained discrepancies in atomic mass or it contributed to understanding nuclear stability?
Rutherfordium
What is an atom?