Unit 2 Atomic Theory (6A-6D)

This particle is found in the nucleus and has no charge

• Neutron
• Proton
• Electron
• Orbital

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

• Electron
• Proton
• Neutron
• Neutral

This is a negatively charged particle found outside the nucleus

• Electron
• Proton
• Neutron
• Orbital

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.

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

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

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

• Proton
• Neutron
• Electron
• Orbitals

Subatomic particle that has a negative charge and is located outside of the nucleus.

• Electron
• Proton
• Neutron
• Voltron

Niels Bohr suggested that electrons.......

• are found in specific orbits
• electrons are scattered throughout the atom
• electrons move according to their energy level
• electrons are positive

Which is the correct sequence of the scientists who made major changes in the model of the atom?
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford

• 2, 1, 4, 3, 5
• 3, 1, 5, 4, 2
• 5, 3, 2, 1, 4
• 4, 3, 2, 1, 5

J.J. Thomson provided evidence that an atom...

• is the smallest particle of matter
• contains negatively charged particles
• has an overall negative charge
• has an overall positive charge