The History of the Atomic Models

Who first had evidence of the atom?

• Bohr

• Dalton

• Rutherford

• Thompson

Who discovered the electron?

• Bohr

• Dalton

• Rutherford

• Thompson

Who was it that developed the rules of chemical reactions and explained that compounds are produced by different combinations of elements?

• John Dalton

• Isaac Newton

• Galileo Galilei

• Albert Einstein

In Rutherford's famous "Gold Foil" experiment, some particles passed through the foil, some were deflected, and some were bounced straight back. This observation made Rutherford conclude

• gold atoms have a solid nucleus

• gold atoms can conduct electricity

• gold atoms are denser than other metals

• gold's elections orbit the nucleus at definite distances from the center

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One important difference between Bohr's model and the modern on is that electrons in the modern model are

• moving in fixed orbits around the nucleus

• moving in an electron cloud

• moving in a random motion around the nucleus

• not moving

In Thomson's plum pudding model, the plums represent

• protons

• neutrons

• the nucleus

• electrons

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Who's model does this picture represent?

• Dalton: 1803-1808

• Thomson 1897

• Rutherford 1911

• Bohr 1913

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Who's model does this picture represent?

• Dalton 1803-1808

• Thomson 1897

• Rutherford 1911

• Bohr 1913

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Who's model does this picture represent?

• Dalton 1803-1808

• Rutherford 1911

• Thomson 1897

• modern atomic model 1920 to the present

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Who's model does this represent?

• Dalton 1903-1808

• Rutherford 1911

• Thomson 1897

• Bohr 1913

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