important people
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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| J.J Thomson (1900's) | -Cathode rays are a stream of negatives particles (electrons).
-Charge to mass ratio (1.76x10^8 C/g)
-Atom is ball of positive charge w/ negatively charged particles embedded (electrons)
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| Robert Millikan (1900's) | -Oil drop experiment
-Charge and mass of electron
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| E. Goldstein (1900's) | Found 'canal rays' which are protons
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| Ernest Rutherford (1900's) | -Gold foil experiment
-shot alpha radiation at gold foil
~most went straight through
~some deflected (1/8000)
-Atom is empty space w/small dense positive region containing atom's mass (nucleus)
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| John Dalton (17-1800's) | -Father of Modern Chemistry
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| Francis Bacon (1500's) | -Heat is motion by very small particles
-importance of experiment
-facts not derived from authority (contradict held belief)
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| Galileo (1500's) | -proposed there was matter too small to see in chemical changes
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| Robert Boyle (1600's) | -pressure/volume relationship of gases
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| Lavoisier (1700's) | -systematic names for elements
-combustion involved material's oxygen
-important accurate weight measurements
-Law of Conservation of Mass
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| Proust (1700's) | -Law of Definite Proportions
~elements in compound always in same ratio of masses
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| James Chadwick (1900's) | -existence of neutrons
-difficult to find because of no charge
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
mason23
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