History of Atoms Review

Front

Who thought that atoms were indivisible and indestructible?

Back

Democritus

Front

Which scientist developed the plum pudding/chocolate chip cookie model?

Back

Thomson

Front

Who measured the charge to mass ratio of an electron?

Back

Thomson

Front

In the cathode ray experiment, Thomson discovered the existence of which particle?

Back

Electrons

Front

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

Back

Atoms

Front

What is the main idea of Dalton's Atomic Theory?

Back

All matter is made up of atoms, which are indivisible and indestructible.

Front

What did Rutherford's gold foil experiment demonstrate?

Back

The existence of a small, dense nucleus in the atom.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What is the charge of an electron?

Back

Negatively charged.