Changing Atomic Theories

Which model of the atom is denoted as the "plum pudding" model?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS1-1

What subatomic particle represents the "plums" in the "plum pudding" model?

• neutrons

• protons

• electrons

Chadwick is credited with discovering which part of the atom?

• nucleus

• protons

• electrons

• neutrons

Who is credited with developing model D?

• Thomson

• Dalton

• Bohr

• Rutherford

Who discovered the subatomic particle "electron"?

• Dalton

• Thomson

• Rutherford

• Bohr

Who discovered the nucleus of the atom?

• Dalton

• Thomson

• Rutherford

• Bohr

Which of the following statements are true about the nucleus?

• It is neutrally charged

• It is positively charged

• It contains most of the mass of the atom

• It is almost empty space

Tags

NGSS.HS-PS1-8

Where is number two pointing at?

• Nucleus

• Protons

• Neutrons

• Electron cloud

Where is number one pointing at?

• Nucleus

• Protons

• Neutrons

• Electron cloud

Who established that "electrons move around the nucleus at fixed distances called orbitals"?

• Dalton

• Thomson

• Rutherford

• Bohr