LQ2 - TEST II - PHYSCI

It is the smallest unit of matter.

• a.       Proton

• b.       Atom

• c.       Matter

What are the three sub-atomic particles?

• a.       Proton, nucleus, and neutron

• b.       Electron, proton, and nucleus

• c.       Proton, electron, and neutron

The Greeks called these particles “atomos” meaning?

• a. Hard

• b.       Indivisible

• c.       Soft

He theorized that all matter is composed of small invisible particles called atoms.

• a.       John Dalton

• b.       Democritus

• c.       Leucippus

He proposed the plum pudding model of the atom.

• a.       Ernest Rutherford

• b.       John Dalton

• c.       J.J. Thomson

(5 POINTS) Give at least 5 model that contribute in the evolution of atomic theory.