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12 Cards in this Set
- Front
- Back
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Earnest Rutherford
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father of nuclear physics
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diameter of an atom
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10^-10m (1A) Angstrum
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what 5 elements compromise most living things?
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H, C, N, O, Ca
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what is 1 amu?
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approximate mass of a nucleon. 1.66*10^-27kg. 1/12 the mass of carbon.
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what properties does a molecule preserve?
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chemical properties
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how many kilometers is in a mile?
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1.6km
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scientific method
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observe, question, predict, test predictions, draw a conclusion
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fact
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choose agreement by competent observers who make a series of observations about the same phenomena
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law/principle
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status of a hypothesis achieves when it's been tested repeatedly and hasn't been contradicted
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Joseph John Thompson
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discovered the electron
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John Dalton
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revived the atomic idea
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Robert Brown
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1827, noticed pollen suspended I'm water were continually moving and jumping about; Brownian Motion
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