The Atom

Compare and contrast the Bohr Model and the Quantum Model of the atom. Describe at least two key similarities and at least one key difference.

The first energy level can hold up to how many electrons?

• 8
• 4
• 2
• 5

Tags

NGSS.HS-PS1-1

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.

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons
• Protons only
• Protons and Electrons
• Protons and Neutrons

Tags

NGSS.HS-PS1-7

Which model is this?

• Thomson Model
• Cloud Model
• Bohr Model
• Rutherford Model

Who discovered the electron

• Rutherford

• Thomson

• Millikan

• Dalton

Who is the scientist who proposed the "solar system" model of an atom where the electrons orbit around the nucleus?

• Democritus
• Niels Bohr
• Ernest Rutherford
• Chadwick

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-8

What is an isotope? 

• A charged atom
• An atom with different amounts of neutrons
• An atom with different amounts of protons
• A neutral atom

Tags

NGSS.HS-PS1-8

What is the green arrow pointing to?

• Atomic Number
• Atomic Mass
• Subatomic Particle
• Element