2020 atomic model review

This model this model was the first to show a nucleus, consisting of protons and neutron.  Electrons surround the nucleus but are not shown in distinct energy levels. 

• The "Rutherford Model" of the atom
• The "Plum Pudding Model" of the atom
• The "Quantum Mechanical Modell" of the atom
• Democritus's model of the atom

Tags

NGSS.MS-PS1-1

This was the first model of the atom ever proposed. It was simple and described atoms as tiny spheres that could not be broken down into smaller pieces.

• Democritus's model of the atom
• The "Plum Pudding Model" of the atom
• The "Rutherford Model" of the atom
• The "Quantum Mechanical Model" of the atom

Tags

NGSS.MS-PS1-1

This model added on to previous models by showing electrons existed at certain "energy levels". However it does not accurately show what those levels look like.

• The "Bohr Model" of the atom
• The "Rutherford Model" of the atom
• The "Plumb Pudding Model" of the atom
• The "Quantum Mechanical Model" of the atom

Tags

NGSS.MS-PS1-1

This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.

• The "Plum Pudding Model" of the atom
• The "Rutherford Model" of the atom
• Democritus's model of the atom
• The "Quantum Mechanical Model" of the atom

Tags

NGSS.MS-PS1-1

Ernest Rutherford discovered that atoms were mostly _________________. 

• negatively charged
• positively charged
• electrons
• empty space. 

What does the nucleus of an atom contain?

• Electrons & Neutrons
• Protons & Neutrons
• Neutrinos & Positrons

Tags

NGSS.MS-PS1-1

Discovered the electron using cathode ray tube

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

His atomic model included a dense positive core in an atom, surrounded by negatively charged particles

• Joseph Thomson
• Niels Bohr
• Ernest Rutherford

Atomic model was termed the "plum pudding model"

• Joseph Thomson
• Niels Bohr
• Ernest Rutherford

Idea was of an indivisible particle of matter he called "atomos"

• John Dalton
• Aristotle
• Democritus
• Plato