Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

How do you calculate the atomic mass of an atom?

Back

Atomic mass is calculated by adding the number of protons and neutrons in the nucleus of the atom.

Front

What is the atomic mass of an atom with 4 protons and 5 neutrons?

Back

9 (4 protons + 5 neutrons = 9)