Front

What is the relative mass of an electron?

Back

0

Front

If an atom has a charge of 0 (neutral) and an atomic number of 8, how many electrons does it have?

Back

8

Front

Where is most of an atom's mass found?

Back

In the nucleus.

Front

What is the formula for Mass Number?

Back

Mass Number = number of protons + number of neutrons.

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons and therefore different mass numbers.

Front

What particles are found in the nucleus of an atom?

Back

Protons and neutrons.

Front

What is the charge of a proton?

Back

+1

Front

What is the charge of a neutron?

Back

0

Front

What is the charge of an electron?

Back

-1

Front

How do you calculate the number of neutrons in an atom?

Back

Number of neutrons = Mass number - Atomic number.