Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons, resulting in a different atomic mass.

Front

How many protons does a Copper atom have?

Back

29

Front

What is the mass number of an isotope?

Back

The mass number of an isotope is the total number of protons and neutrons in the nucleus of an atom.

Front

How many neutrons does the isotope of lithium with mass number 8 have?

Back

5

Front

Which subatomic particle has a positive charge?

Back

Proton.

Front

What is the charge of a neutron?

Back

Neutrons have no charge; they are neutral.

Front

How many protons does an isotope of titanium have?

Back

22

Front

Which subatomic particles are found in the nucleus of an atom?

Back

Protons and neutrons.

Front

What is the heaviest subatomic particle?

Back

Protons and neutrons have nearly the same mass.

Front

How do you determine the number of neutrons in an isotope?

Back

Subtract the number of protons (atomic number) from the mass number.