Atomic Model History

Front

The current model of the atom, where electrons exist within a range of possible locations, is called _____

Back

the quantum model

Front

Rutherford referred to the center of the atom, where the mass was concentrated, as _____

Back

the nucleus

Front

Whose model showed atoms as uniformly packed spheres of positive matter filled with negatively charged electrons?

Back

J. J. Thomson

Front

All matter is made of what?

Back

atoms

Front

J. J. Thomson won a Nobel Prize in 1906. Which particle did he discover?

Back

the electron

Front

What is the name of the model that describes the atom as having a dense nucleus surrounded by orbiting electrons?

Back

the planetary model

Front

Who proposed the first atomic theory that stated atoms are indivisible and indestructible?

Back

John Dalton

Front

What did Niels Bohr contribute to the atomic model?

Back

He introduced the idea of quantized energy levels for electrons.

Front

What is the charge of an electron?

Back

negative

Front

What is the charge of a proton?

Back

positive