click below
click below
Normal Size Small Size show me how
Atomic Structure
| Question | Answer |
|---|---|
| discovered the nucleus of an atom | rutherford |
| proposed the planetary model for atomic structure | niel bohr |
| stated the uncertainty principle | neisenberg |
| discovered the electron | JJ Tomson |
| stated that it is impossible to know the position and speed of an electron at the same time | heisenberg |
| bombarded gold foil with helium nuclei | rutherford |
| stated that electrons exist in specific energy levels | neils bohr |
| used a cathode ray tube and discovered that electrons are negatively charged particles | JJ Tompson |
| developed an equation to predict the probable location of an electron | schroedinger |
| discovered the neutron | chadwick |
| calculated that the nucleus was 1/10000 the diameter of the atom | rutherford |
| developed an equations which is used to find the energy of photon of light | pianck |
| a series of bands of colors emitted by excited atom | emission light specturm |
| the lowest energy state of an atom | ground state |
| an energized stat of an atom | excited state |
| an instrument used to measure the wavelength of light | spectrometer |
| an equation for finding the energy of a wave | E=h.V |
| the theory that describes waves at teh atomic levels | quantum theory |
| an amount of energy that can be absorbed or released | quantua |
| packets of lights given off the excited atoms | photon |
| stated the atomic theory | John Dalton |
| compounds have a definite compositions by mass | law of defini |