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19 Cards in this Set
- Front
- Back
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who created the "Law of Mass Conservation"? |
Antoine Lavoisier |
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who discovered the "nuclear atom"? |
Ernest Rutherford |
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who was the first scientist to begin using quantitative measurements in chemistry? |
Robert Boyle |
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"Proust's Law" is aka what? |
"Law of Definite Proportions"; a given compound always has the same proportions by mass |
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who thought the atom to be like an english plum pudding in structure? |
JJ Thomson |
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who worked with the proportions of molecules, but hadn't yet understood the quanitiy of atoms involved? |
John Dalton |
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who took Dalton's work, and started combining different volumes of gases to observe their reactions? |
Gay-Lussac |
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who created the general idea of elements? |
Robert Boyle |
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who discovered the "Law of Multiple Proportions"? |
John Dalton |
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who used the cathode-ray tube, and what did he find? |
JJ Thomson; there were particles with a negative charge; he also discovered the charge/mass ratio |
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Avagadro made two important contributions, name them. |
Avagadros hypothesis (gases); used gay-lussacs research with his hypothesis to determine that volume is indicative of the amount of particles |
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who used the chamber with the atomizer, xray source, and electromagnetic field? what did this experiment indicate? |
Robert Milikan; he used this experiment to detetmine the charge of an electron, plus JJ Thomson's charge/mass ratio to also determine the mass of an electron |
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list/describe the 3 types of radioactive emission |
1. alpha particles: high mass/low energy 2. beta particles: low mass/moderate energy 3. gamma rays: only energy |
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Ernest Rutherford conducted which experiment, and what did he conclude? |
Shot alpha particles at foil; debunked the plum pudding model and discovered the nuclear atom |
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Sodium-23 has how many protons, neutrons, and electrons? |
P: 11 N: 12 E: 11 |
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who determined the charge/mass ratio of the electron? |
JJ Thomson |
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John Dalton knew what, but didn't know what? |
He knew the proportions of atoms, but not the #'s involved; thought nature was simple as possible |
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who discovered the charge of an electron? |
Robert Millikan; therefore discovering the mass too |
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nuclear model of the atom was discovered by whom? |
Ernest Rutherford |
