Chemistry Ch 4 Word Scramble
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Question | Answer |
has the idea that any sample of water always contains 8 g of oxygen for every 1 g of hydrogen | Law of definite composition |
first model to include atoms of each element having different masses | Dalton's Atomic Theory |
helped explain line spectra | Bohr model of the atom |
states that it is impossible to know both the energy and the exact position of an electron at the same time | Heisenberg uncertainty principle |
describes how electrons fill orbitals | Hund's rule |
describes how electrons fill a sublevel (lower energy levels first) | Aufbau principle |
states that no two electrons in an atom can have the same set of four quantum numbers | Pauli exclusion principle |
Who is associated with philosophical atomism? | Democritus |
Who made the first experimental atomic model? | John Dalton |
Who was the first to be able to explain cathode rays | J.J. Thomson |
Who discovered x-rays? | Wilhelm Roentgen |
Who discovered the neutron? | James Chadwick |
Who discovered protons? | Ernest Rutherford |
Who built the "planetary" model of the atom | Niels Bohr |
Who discovered spectroscopy and built the prism spectroscope | Robert Bunsen and Gustav Kirchoff |
Who discovered magnetic resonance imaging? (MRI) | Raymond Damadian |
Who implemented the gold foil experiment? | Hans Geiger |
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