Atomic Timeline

Viewed the atom as a solid sphere that could not be divided into smaller particles.

• JJ Thomson

• Ernest Rutherford

• John Dalton

• Niels Bohr

Thought the atom was neutral and had no charge

• JJ Thomson

• Ernest Rutherford

• John Dalton

• Niels Bohr

Thought the atom contained negative electrons surrounded by positive material

• JJ Thomson

• Ernest Rutherford

• John Dalton

• Niels Bohr

Developed the "plum pudding" model of the atom

• JJ Thomson

• Ernest Rutherford

• John Dalton

• Niels Bohr

Discovered the atom has a nucleus with positively charged protons inside. The electrons circle the nucleus

• JJ Thomson

• Ernest Rutherford

• John Dalton

• Niels Bohr

Tags

NGSS.HS-PS1-8

Proposed electrons orbit the nucleus in specific layers, called energy shells.

• John Dalton

• JJ Thomson

• Ernest Rutherford

• Niels Bohr

Tags

NGSS.HS-PS1-1

Developed this common model of the atom

• John Dalton

• JJ Thomson

• Ernest Rutherford

• Niels Bohr

The model shown in the picture was developed by:

• Bohr

• Heisenberg

• Thomson

• Dalton

The model shown in the picture was developed by:

• Einstein

• Heisenberg

• Thomson

• Bohr

What is the name of the model shown in the picture?

• nuclear model

• billiard ball/solid sphere

• planetary

• electron cloud