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Honors Chemistry Scientists Study Guide

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Honors Chemistry Scientists Study Guide Democritus - Answer️️ -Matter is made of "indivisible parts" he called atomos "meaning cannot be cut" Democritus - Answer️️ -Because of his ideas, we still call these particles atoms Dalton - Answer️️ -Proposed that atoms are small indivisibl...

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  • September 13, 2024
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  • 2024/2025
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  • Honors Chemistry
  • Honors Chemistry
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Honors Chemistry Scientists Study
Guide


Democritus - Answer✔️✔️-Matter is made of "indivisible parts" he called atomos

"meaning cannot be cut"


Democritus - Answer✔️✔️-Because of his ideas, we still call these particles atoms

Dalton - Answer✔️✔️-Proposed that atoms are small indivisible spheres

Dalton's Atomic Model - Answer✔️✔️-Billard Ball model and was hard sphere

(model)

J.J Thompson - Answer✔️✔️-He did experiments with cathode ray tubes.

J.J Thompson - Answer✔️✔️-He found that all atoms contain a little particle called

electron.

Thompson's Atomic Model - Answer✔️✔️--called "Plum Pudding" or "Raisin Bun"

-was called positive dough with negative electrons like raisins scattered throughout

(model)

Rutherford - Answer✔️✔️-He did the gold foil experiment.

Rutherford - Answer✔️✔️-He did experiments with radioactive Polonium which emitted

positive particles called alpha particles.

Rutherford - Answer✔️✔️-In an experiment, he shot the positive alpha particles through a

piece of gold foil and then onto a screen.


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