History of the Atomic Theory

Front

Democritus was known for

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creating the term atom, meaning indivisible.

Front

The word 'atom' originated from

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The word 'atamos'.

Front

What was the name of Rutherford's experiment that led to his discovery of the nucleus?

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Gold Foil Experiment.

Front

Bohr's model of the atom was called

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Planetary Model.

Front

The _____________ has a negative charge.

Back

electron.

Front

What did John Dalton propose about atoms?

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Atoms are indivisible and indestructible particles that make up all matter.

Front

What is the main idea of the Plum Pudding Model?

Back

Electrons are embedded in a positively charged 'soup'.

Front

Who discovered the electron?

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J.J. Thomson.

Front

What is the charge of a proton?

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Positive charge.

Front

What did Ernest Rutherford conclude from his gold foil experiment?

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Atoms have a small, dense nucleus that contains most of their mass.