The History of the Atomic Theory

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Thomson

• Ernest Rutherford

• John Dalton

• Democritus

Which of the following is proposed by Erwin Schrodinger?

• Planetary model of the atom
• Plum pudding model of the atom
• Saturnian model of the atom
• Electron cloud model of the atom

Discoverer of the neutron?

• Jimmy
• Chadwick
• Charleston
• Rutherford

Earth, Air, Fire, and Water were the fundamental elements propose by ___.

• Aristotle
• Democritus
• Plato
• Galileo

The atom is mostly empty space is a confirmed idea made by who?

• Rutherford
• Nagaoka
• Bohr
• Chadwick

Ernst Rutherford discovered which part of the atom through the use of gold foil?

• Proton
• Neutron
• Electron
• Orbitals

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NGSS.HS-PS1-8

Which is the correct sequence of the scientists who made major changes in the model of the atom?

1-JJ Thomson

2-Erwin Schrodinger

3-John Dalton

4-Niels Bohr

5-Ernest Rutherford

• 2, 1, 4, 3, 5

• 3, 1, 5, 4, 2

• 5, 3, 2, 1, 4

• 4, 3, 2, 1, 5

Which scientist saw the atom as a positively charged sphere with negative particles (electrons) embedded within?

• J.J. Thomson

• Niels Bohr

• John Dalton

• Ernest Rutherford

Which scientist proposed a model of the atom in which the electrons are orbiting at different levels?

• Niels Bohr

• James Chadwick

• John Dalton

• Ernest Rutherford

J.J. Thomson's model of the atom is given this name because he believed that electrons were spread randomly throughout a positive sphere.

• plum pudding model

• orbital model

• Thomson's model

• plasma model