Parts of an Atom

Front

What are the three main subatomic particles of an atom?

Back

Protons, Neutrons, and Electrons.

Front

Where are protons and neutrons located in an atom?

Back

In the nucleus.

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 relative mass of a proton compared to an electron?

Back

Proton is approximately 1836 times more massive than an electron.

Front

What does the atomic number of an element represent?

Back

The number of protons in the nucleus of an atom.

Front

What does the mass number of an atom represent?

Back

The total number of protons and neutrons in the nucleus.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the significance of the electron cloud?

Back

It represents the area around the nucleus where electrons are likely to be found.