History of the atom

History of the atom

The atom started off as an idea!

Multiple Choice

Atomos, a word created by Democritus, means what?

• Particle

• Not to be cut

Multiple Choice

Democritus was a philosopher who thought all matter was made up of small particles called

• Quarks

• Protons

• Atomos

Multiple Select

Aristotle was also a philosopher. He thought that all matter was made of four elements. The four elements (to him) were

• Earth

• Air

• Wind

• Water

• Fire

Multiple Choice

Even though Aristotle was "only" a philosopher, his ideas were generally correct without any scientific proof.

• True

• False

Multiple Choice

John Dalton thought all atoms of the same element were

• identical

• random

• different

Multiple Select

He also thought that atoms were:

• Small

• Indivisible

• Made of quarks

Multiple Choice

JJ thomson discovered the

• Proton

• Neutron

• Electron

Multiple Choice

JJ Thomsons revised/new model was called the

• chocolate chip model

• blueberry muffin model

• plum pudding model

Multiple Choice

Rutherford discovered the

• Protons

• Neutrons

• Nucleus

• Electrons

Multiple Select

Rutherford proved that the nucleus was

• dense

• positive

• negative

Multiple Choice

Thus, Rutherford concluded that the atom was mostly

• positive

• empty space

• filled with material

Notice that there can only be 2 electrons on the inner orbit

Multiple Choice

Niels Bohr's model introduced the fact that atoms have

• specific orbits

• no mass

• no charges

Multiple Choice

How many electrons can exist in the inner orbit of Bohr's Model?

• 2

• 3

• 5

• 8

Multiple Choice

In the modern atomic theory (schrodinger), what is the name for where the electrons exist?

• orbits

• electron cloud

• space

All done! Great job.. Was there anything that you need to go over? Feel free to message me!