A combination of the information from the given review and the Atomic Theory Timeline/Atomic Structure practice quiz.
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| 237801479 | Developed the electron cloud model (quantum model) of the atom | Schrodinger | |
| 237801480 | First proposed the concept of the atom | Democritus | |
| 237801481 | Calculated the mass and charge of an electron | Millikan | |
| 237801482 | Discovered negatively charged electrons | Thomson | |
| 237801483 | Proposed that atoms were uniform spheres | Dalton | |
| 237801484 | Stated that electrons move in circular orbits | Bohr | |
| 237801485 | Discovered a dense, positively charged nucleus | Rutherford | |
| 237801486 | Proposed the existence of neutrons | Chadwick | |
| 237801487 | Number the following models in chronological order, starting with 1 for the earliest model. Billiard Ball Model; Neutron Model; Electron Cloud Model; Nuclear Model; Planetary Model; Plum-Pudding Model | 1 - Billiard Ball Model; 2 - Plum-Pudding Model; 3 - Nuclear Model; 4 - Planetary Model; 5 - Electron Cloud Model; 6 - Neutron Model | |
| 237801488 | What experiment was performed by Millikan? | Oil Drop Experiment | |
| 237801489 | What experiment was performed by Rutherford? | Gold Foil Experiment | |
| 237801490 | What experiment was performed by Thomson? | Cathode Ray Experiment | |
| 237801491 | Protons and neutrons are both composed of smaller particles called | Quarks | |
| 237801492 | The mass number of an atom is determined by adding the number of | Protons and Neutrons | |
| 237801493 | Most of an atom's mass is contained in its | Protons and Neutrons | |
| 237801494 | Atoms with the same number of _______ and different number of ________ are called isotopes | Blank #1: Protons Blank #2: Neutrons | |
| 237801495 | What isotope is the standard for the atomic mass unit? | Carbon-12 | |
| 237801496 | How is the periodic table arranged? | Mendeleev's first periodic table organized by atomic mass. Modern periodic table organized by increasing atomic number. | |
| 237801497 | How is reactivity related to the valence electrons in an atom? | Low # of valence electrons = high reactivity; high # of valence electrons = low reactivity. | |
| 237801498 | How does atomic radius change as you go across the periodic table (left to right)? | Atomic radius decreases. | |
| 237801499 | How does ionization energy change as you go across the periodic table (left to right)? | Ionization energy increases. | |
| 237801500 | How does atomic radius change as you go down a family on the periodic table? | Atomic radius increases. | |
| 237801501 | How does ionization energy change as you go down a family on the periodic table? | Ionization energy decreases. | |
| 237801502 | If the wavelength gets bigger, what happens to the frequency? | The frequency decreases. | |
| 237801503 | If the frequency increases, what happens to the energy? | The energy increases. | |
| 237801504 | Define extensive properties | Properties that do depend on the amount of the substance (ex: mass). | |
| 237801505 | Define intensive properties | Properties that do not depend on the amount of the substance (ex: color). |
