| A | B |
|---|
| Greek Philosopher who proposed that materials are made of bits ("atomos") | Democritus |
| Redeveloped the idea of indivisible atoms through gas laws | Dalton |
| Discovered radioactivity | Bequeral |
| Discovered the electron using cathode rays--developed the plum pudding model | JJ Thomson |
| Shot alpha particles through gold leaf--discovered the nucleus | Rutherford |
| Discovered the charge / mass ratio of the electron--showed that they were particles | Millikan |
| Demonstrated that light can act like a particle with the photoelectric effect | Einstein |
| Determined that light came in packets of energy (photons): E = hf | Planck |
| Developed a quantum model for the hydrogen atom--explained the line spectrums | Bohr |
| Developed mathematical model that leads to s, p, d, f quantum model of the atom | Schrodinger |
| Determined that we cannot both know the position and velocity of an electron--need probabilities of finding them | Heisenburg |
| Determined that orbitals in a sublevel must all be half full before doubling up electrons | Hund |
| Determined that no two electrons can have exactly the same energy | Pauli |
| Determined that mass must move in waves (very, very small ones) | deBroglie |
| The type of radiation that releases 2 protons and 2 neutrons (a Helium nucleus)? | Alpha Radiation |
| term for the spectrum of "all types" of light | electromagnetic radiation spectrum |
| What color of visible light has the highest energy? | Violet |
| What is the name for the "packets of energy" that come with all forms of light / EMR? | photons |
| What is the speed of all forms of electromagnetic radiation? | 3 x 10**8 m/s, 186,000 miles / second |
| In the Bohr model, what type of EMR is released when electrons fall to level 1? | Ultraviolet radiation--large energy difference |
| In the Bohr model, what type of EMR is released when electrons fall to level 2? | Visible Light |
| In the Bohr model, what type of EMR is released when electrons fall to level 3? | Infrared radiation--smaller energy differences |
| What are the 6 categories of EMR? | Radio, Infrared, Visible Light, Ultraviolet, X-rays, Gamma |
| Developed the Plum Pudding Model of the Atom | JJ Thomson |
| Created the Satellite Model of the Atom even though they knew it had to be wrong | Rutherford |
