Atomic Theory & 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

Where are protons and neutrons located in an atom?

Back

In the nucleus.

Front

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

Back

Proton is approximately 1836 times more massive than an electron.

Front

What determines the atomic number of an element?

Back

The number of protons in the nucleus.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

How do isotopes of an element differ from each other?

Back

By the number of neutrons.

Front

What is the smallest unit of an element that retains its properties?

Back

Atom.