Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
ChemReview2
Chemistry Review Chapters 4 & 19
| Question | Answer |
|---|---|
| John Dalton | Dalton's Atomic Theory |
| Dalton's Atomic Theory | All elements are made of tiny indivivisible particles called atoms. All atoms of a given element are identical, but atoms of one element differ from atoms of other elements. Atoms can be neither created or destroyed during a chemical reaction. |
| Law of the Conservation of Mass | Antoine Lavoisier |
| The Law of Definite Proportions | Joseph Proust |
| The Law of Multiple Proportions | John Dalton |
| Aristotle | Matter is continuous |
| Democritus | 1st to propose the existance of atoms |
| Albert Crooke | Inventor of the Cathode Ray Tube (CRT) |
| J.J. Thompson | Modified the Cathode Ray Tube and made many experiments using cathode rays that Crooke had invented. |
| Plum Pudding Model of the Atom | Formulated by J.J. Thompson |
| Eugene Goldstein | Discovered Canal Rays. Also modified the CRT and demonstrated that a positive charges were left behind. This led him to discover the CATION. |
| Robert Milliken | Measured the charge of an electron. |
| Henri Bequerel | Discovered Radioactivity |
| Marie Curie | discovered Radium (Ra) and Polonium (Po) |
| William Roentgen | discovered X-Rays |
| Ernest Rutherford | Conducted the "Gold Foil Experiment" |
| Who found these things? 1. Discovered the nucleus. 2. The nucleus has a positive charge. 3. The nucleus contains the majority of the mass of the atom. 4. The atom is mostly empty space. | Ernest Rutherford |
| James Chadwick | Discovered the neutron |
| Geiger Counter | a device used to measure radioactivity |
| Scintillation Counter | another device used to measure radioactivity |
| Badges | Yet a third device to measure radioactivity |
| Diatomic/Polytomic Elements | H (2), O (2), N (2), F (2), Cl (2), Br (2), I (2), S (8), P (4) |
| Allotropes | Same element, different structural formula. Example: O(3) = Ozone - - derived from the diatomic Oxygen |
Created by:
GAntonini