Atomic Theory

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

• Proton
• Neutron
• Electron
• Orbitals

Tags

NGSS.HS-PS1-8

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

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

Tags

NGSS.MS-PS1-1

What does "atomos" mean?

• easily divided
• unable to be divided
• really small
• sometimes divided

Tags

NGSS.MS-PS1-1

This particle is found in the nucleus and has no charge

• Neutron
• Proton
• Electron

This particle is found in the nucleus and has a positive charge

• Electron
• Proton
• Neutron

This is a negatively charged particle found outside the nucleus

• Electron
• Proton
• Neutron

This contains most of the mass of an atom

• Electron Cloud
• Nucleus
• Electron

Tags

NGSS.HS-PS1-8

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.
• alpha particles have a positive charge.
• gold is not a dense as previously thought.
• there is a dense positively charged nucleus at the center of an atom.

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

Tags

NGSS.MS-PS1-1

True or False: The majority of an atom is made up of empty space

• True
• False

Tags

NGSS.MS-PS1-1