Atomic Structure Physical Science Review

Front

What particle did J.J. Thomson discover using a cathode ray tube?

Back

Electron

Front

What is the atomic number of an atom with 3 protons?

Back

3

Front

Who proposed that electrons move in clouds rather than orbits?

Back

Schrödinger

Front

If an atom loses electrons, what happens to its charge?

Back

The charge becomes positive.

Front

What did Rutherford's gold foil experiment demonstrate?

Back

There is a dense positively charged nucleus at the center of an atom.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons.

Front

What is the mass of an electron compared to a proton?

Back

Much smaller.