C02 - Hypothesis vs Theory & History of Atomic Theory

Who said, "Atoms of the same element are identical and are different from atoms of other elements."?

• Democritus

• Dalton

• Thomson

Who said, "All atoms contain tiny particles that are attracted to a positively charged plate."?

• Democritus

• Dalton

• Thomson

Who said, "I think there is a limit to the number of times that matter can be divided, but have no data."?

• Democritus

• Dalton

• Thomson

Which path is expected to be made by a positively charged proton?

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Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Which path is expected to be made by a negatively charged electron?

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Tags

NGSS.HS-PS2-4

What experiment did Democritus use for his discovery?

• He did not perform experiments, he was a philosopher (thinker).

• He did not perform experiments, he created a theory of atoms.

• Used cathode rays towards + and - plates.

What experiment did Dalton use for his discovery?

• He did not perform experiments, he was a philosopher (thinker).

• He did not perform experiments, he created a theory of atoms.

• Used cathode rays towards + and - plates.

What experiment did Thomson use for his discovery?

• He did not perform experiments, he was a philosopher (thinker).

• He did not perform experiments, he created a theory of atoms.

• Used cathode rays towards + and - plates.

Which model was created by Democritus?

• He did not have a model, he had a hypothesis.

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Which model was created by Dalton?

• He did not have a model, he had a hypothesis.

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