Atomic Theory & Atomic Structure

Front

What are the three main subatomic particles of an atom?

Back

Protons, Neutrons, Electrons

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 atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass of a neutron compared to a proton?

Back

Approximately equal.

Front

What is the role of electrons in an atom?

Back

Electrons are involved in chemical bonding and reactions.

Front

Who proposed the planetary model of the atom?

Back

Niels Bohr

Front

What is the significance of the Gold Foil Experiment?

Back

It led to the discovery of the atomic nucleus.

Front

What does the periodic table represent?

Back

An arrangement of elements organized by increasing atomic number.