Atomic Theory Review

Front

Who was the first person to study atomic theory?

Back

Democritus

Front

What was the name of J.J Thomsons' model of atomic structure? Options: Electron Cloud Model, Electron Sea Model, Plum Pudding Model, Bohr Model

Back

Plum Pudding Model

Front

What does the Bohr model suggest?

Back

That electrons travel around the nucleus of an atom in orbits or definite paths.

Front

Earth, Air, Fire, and Water were the fundamental elements proposed by ___?

Back

Aristotle

Front

Which Scientist said, matter made of atoms that can not be created or destroyed? Options: Democritus, Aristotle, John Dalton, JJ. Thompson

Back

John Dalton

Front

Which Scientist created this model?
Options: Democritus, Chadwick, Bohr, Rutherford

Back

Bohr

Front

Why are electrons not factored into atomic mass?

Back

They are so small their mass is negligible.

Front

What experiment did JJ Thomson use?

Back

cathode ray tube experiment

Front

Which postulate of John Dalton about atoms was proven wrong? Options: All elements are made up of tiny indivisible particles called atoms., The atoms of one element are different from the atoms of another element., Atoms of different elements chemically combine to form chemical compounds., During chemical reactions, atoms are rearranged.

Back

All elements are made up of tiny indivisible particles called atoms.

Front

The number of protons is equal to the number of electrons for an atom. This means an atom is-

Back

electrically neutral