Atomic Theory

Front

Who proposed the Atomos Theory? Options: Democritus, Rutherford, Dalton, Aristotle

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Democritus

Front

Who stated that "Everything is composed of atoms"? Options: Democritis, Dalton, Moseley, Einstein

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Democritis

Front

atom

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Indivisible

Front

What contribution did John Dalton make to atomic theory? Options: He discovered that every atom was positively charged., He discovered that every element consisted of one type of atom that couldn't be divided., He discovered that atoms had nuclei., He discovered that atoms could be divided into smaller parts.

Back

He discovered that every element consisted of one type of atom that couldn't be divided.

Front

Who believed that atoms of the same element are identical to each other? Options: Bohr, Rutherford, Dalton, Thomson

Back

Dalton

Front

How did Thomson build upon Dalton's model?

Back

He discovered subatomic particles (electron).

Front

What scientist is best known for his "Plum Pudding" model of the atom? Options: J.J. Thomson, Ernest Rutherford, John Dalton, Democritus

Back

J.J. Thomson

Front

Who discovered the electron using the cathode ray tube experiment?

Back

Joseph Thomson

Front

Rutherford's gold foil experiment provided evidence that...

Back

there is a dense positively charged nucleus at the center of an atom.

Front

Who discovered the nucleus using the gold foil experiment?

Back

Ernest Rutherford