Chemistry Review Chapters 4 & 19
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| John Dalton | Dalton's Atomic Theory
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| 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.
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| Law of the Conservation of Mass | Antoine Lavoisier
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| The Law of Definite Proportions | Joseph Proust
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| The Law of Multiple Proportions | John Dalton
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| Aristotle | Matter is continuous
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| Democritus | 1st to propose the existance of atoms
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| Albert Crooke | Inventor of the Cathode Ray Tube (CRT)
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| J.J. Thompson | Modified the Cathode Ray Tube and made many experiments using cathode rays that Crooke had invented.
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| Plum Pudding Model of the Atom | Formulated by J.J. Thompson
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| 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.
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| Robert Milliken | Measured the charge of an electron.
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| Henri Bequerel | Discovered Radioactivity
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| Marie Curie | discovered Radium (Ra) and Polonium (Po)
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| William Roentgen | discovered X-Rays
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| Ernest Rutherford | Conducted the "Gold Foil Experiment"
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| 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
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| James Chadwick | Discovered the neutron
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| Geiger Counter | a device used to measure radioactivity
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| Scintillation Counter | another device used to measure radioactivity
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| Badges | Yet a third device to measure radioactivity
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| Diatomic/Polytomic Elements | H (2), O (2), N (2), F (2), Cl (2), Br (2), I (2), S (8), P (4)
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| Allotropes | Same element, different structural formula. Example: O(3) = Ozone - - derived from the diatomic Oxygen
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Or sort by any of the columns using the down arrow next to any column heading.
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