Atomic Theory

Front

Plum pudding model of the atom

Back

J.J Thomson

Front

This particle is found in the nucleus and has a positive charge.

Back

Proton

Front

Negatively charged particle found outside the nucleus

Back

Electron

Front

This contains most of the mass of an atom

Back

Nucleus

Front

What scientist is best known for his "Plum Pudding" model of the atom?

Back

J.J. Tomson

Front

Place the following scientists in order, from earliest to latest: Ernest Rutherford, J.J. Thomson, John Dalton

Back

John Dalton, J.J. Thomson, Ernest Rutherford

Front

What does the nucleus of an atom contain?

Back

Protons and neutrons

Front

Which scientist proposed a model of the atom in which the electrons are orbiting at different levels? Options: Niels Bohr, James Chadwick, John Dalton, Ernest Rutherford

Back

Niels Bohr

Front

Which scientist saw the atom as a positively charged sphere with negative particles (electrons) embedded within? Options: J.J. Thomson, Niels Bohr, John Dalton, Ernest Rutherford

Back

J.J. Thomson

Front

Bohr's model of the atom proposed that ___. Options: electrons move around the nucleus in fixed orbits, neutrons move around the nucleus, neutrons do not exist, but are just paired protons and electrons, the nucleus spins

Back

electrons move around the nucleus in fixed orbits