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

• John Dalton

• Aristotle

• Democritus

• Plato

Which scientist is responsible for first stating that all the atoms of a particular element are identical but are different from the atoms of all other elements (Atomic Theory)?

• Dalton

• Thomson

• Aristotle

• Democritus

• Proust

Who named the positive center of the atom the "nucleus?"

• Democritus

• Dalton

• Thomson

• Rutherford

What is the image a picture of?

• Einstein Model

• Bohr Model

• Pierre Model

• Newton Model

Tags

NGSS.HS-PS1-1

The center of an atom is called the ________ .

Tags

NGSS.HS-PS1-8

The Bohr atomic model suggests that electrons move

• in a flat ring around a massive, positively charged center (nucleus)

• only in distinct, spherical orbits at fixed distances from the nucleus

• randomly around the nucleus

• rapidly throughout a uniform, positively charged matrix

The new branch of modern atomic science that began in the 20th century is known as

• Super Atomic Laws

• Relativity

• Plum Pudding Model

• Quantum Mechanics

• Mike and the Mechanics

Tags

NGSS.HS-PS1-8

NGSS.HS-PS4-3

In the quantum mechanical model of the atom, the spherical orbits of the Bohr model were replaced by ________________.

• Electron Arcs

• Orbitals

• Neutron Kinetics

• Quarks

The key factor that drove the development of new atomic models is

• workability

• ease of changeability

• ease of measurement

• understanability

The Bohr atomic model is still used today even though it is not entirely accurate.

• True

• False