Regular - Atomic Theory Scientist

He developed the planetary model of the atom. (Mark all that could apply)

• Rutherford
• Bohr
• Chadwick
• Dalton

What did Thomson discover?

• electron
• proton
• neutron
• electron cloud

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

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

How did Rutherford discover the proton?

• Cathode tube ray experiment
• Gold Foil Experiment
• Planetary Model
• Plum Pudding Model

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

After Rutherford discovered the nucleus, which model is believed to be true?

• protons, neutrons, and electrons are evenly distributed

• the nucleus is made of protons, neutrons, and electrons

• the nucleus is made of protons and electrons

• the model is mostly empty space with a central nucleus

Who came up with the first atomic theory?

• Dalton

• Socrates

• Thomas

• Rutherford

Determined that electron paths cannot be predicted and exist inside the Electron Cloud.

• Dalton

• Rutherford

• Heisenberg

• Bohr

__________ thought that matter was made of indivisible atoms.

• Bohr

• Dalton

• Thomson

• Rutherford

The word 'atomos' termed by Democritus means:

• Indivisible
• Unconscious
• Blue
• Nuclear powered