Atomic Theory and Atomic Structure

Front

What causes the fuzzy appearance of atoms in images?

Back

Fast-moving electrons.

Front

Who discovered the nucleus of the atom through the Gold Foil Experiment?

Back

Rutherford.

Front

What subatomic particle do all atoms of a particular element have in common?

Back

Protons.

Front

How many protons does Argon have according to the periodic table?

Back

18 protons.

Front

Who discovered the electron within the atom?

Back

Thomson.

Front

What is the basic unit of matter?

Back

Atom.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a neutron?

Back

Neutral.