History of Atoms

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Science

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8th Grade

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Practice Problem

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Medium

Bill Goette

Used 6+ times

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1 Slide • 7 Questions

Atoms and who helped discover them.

By Bill Goette

Multiple Choice

What did Democritus contribute?

The name and idea of atoms

elements make compounds

named the nucleus and neutrons

electrons are negative

Multiple Choice

What did John Dalton say?

John Dalton said that matter is made up of atoms, which are indivisible and unique to each element.

John Dalton stated that elements are made of molecules.

John Dalton believed that atoms can be created and destroyed.

John Dalton claimed that all matter is liquid.

Multiple Choice

What did JJ Thomson discover?

The electron.

The neutron.

The nucleus.

The proton.

Multiple Choice

What did Ernest Rutherford figure out?

Rutherford discovered the electron.

Rutherford invented the periodic table.

Rutherford figured out that atoms have a nucleus.

Rutherford proposed the theory of relativity.

Multiple Choice

What did James Chadwick discover?

The neutron.

The positron.

The proton.

The electron.

Multiple Choice

What did Niels Bohr conclude?

Electrons have fixed positions in an atom.

Electrons are randomly distributed around the nucleus.

Electrons occupy orbits or energy levels around the nucleus.

Electrons do not exist in defined energy levels.

Multiple Choice

Where are the electrons found according to the Modern Quantum Model?

Electrons are located in the nucleus.

Electrons are found in a cloud around the nucleus.

Electrons are found in fixed paths around the nucleus.

Electrons are scattered randomly throughout the atom.

Atoms and who helped discover them.

By Bill Goette

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