Atomic Theory

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

• J.J. Thomson
• Ernest Rutherford
• John Dalton
• Democritus

Tags

NGSS.MS-PS1-1

Place the following scientists in order, from earliest to latest: 
Rutherford, Dalton, Bohr, Thomson

• Dalton, Rutherford, Bohr, Thomson
• Thomson, Dalton, Rutherford, Bohr
• Dalton, Thomson, Rutherford, Bohr
• Bohr, Dalton, Rutherford, Thomson

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Who discovered the nucleus using the gold foil experiment?

• Democritus
• Robert Millikan
• James Chadwick
• Ernest Rutherford

He discovered the electron using cathode ray tube experiment.

• Joseph Thomson
• John Dalton
• Ernest Rutherford
• Robert Millikan

Which scientist is considered as the father of the atomic theory?

• JJ Thomson
• Ernest Rutherford
• John Dalton
• James Chadwick

The Nucleus has an overall ____ charge

• Neutral

• Negative

• Positive

• Depends on the Element

The number of ____ determines the element

• Protons

• Neutrons

• Electrons

• Protons & Neutrons

Which Subatomic Particles Are Found in the Nucleus?

• Protons & Electrons

• Electrons & Neutrons

• Protons & Neutrons

• Protons Only

• Neutrons Only

Electrons are located where in the atom?

• Electron Cloud (Outside the Nucleus)

• Inside the Nucleus

• Electrons are not part of the atom

Elements with different number of neutrons are called

• Isotopes

• Ions

• Neutrotopes

• Neurons