History of the atomic model

Whose model suggested that negative particles were mixed in with positively charged material - like seeds in a watermelon?

• J.J. Thomson

• Ernest Rutherford

• Niels Bohr

• Albert Einstein

Tags

NGSS.HS-PS1-3

Who discovered that the atom had an small, dense, positively charged center?

• Ernest Rutherford

• J.J Thomson

• Robert Millikan

• John Dalton

Tags

NGSS.HS-PS1-8

Place the following atomic models in order, from earliest to latest:

A) Rutherford B) Thomson C) Dalton

• B, C, A

• C, A, B

• A, C, B

• C, B, A

Which scientist discovered that the atom has parts - which means it can be divided?

• Democritus

• Dalton

• Thomson

• Rutherford

In the atomic model nicknamed the "plum pudding" model, what do the plums represent?

• the nucleus

• the atom

• the electrons

• the positive material

Tags

NGSS.MS-PS1-1

Who discovered that atoms are mostly empty space?

• Dalton

• Thomson

• Rutherford

• Bohr

Who proposed that electrons move around the nucleus in circular orbits?

• Dalton

• Thomson

• Rutherford

• Bohr

Which scientist was the first person responsible for proposing the idea of atoms?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Which scientist was the first person responsible for proposing the discovery of the electron?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Which scientist was the first person responsible for proposing the discovery of the nucleus?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Tags

NGSS.HS-PS1-8