(239) Isotopes

What are isotopes?

Different versions of an element or atom. Where atoms have the same number of protons but different numbers of neutrons. Because they have the same number of protons, they are the same element.

but because they contain different numbers of neutrons their masses and mass numbers are different

What makes a carbon atom, a carbon atom?

The fact that it has 6 protons

What makes up the mass number?

The number of protons and neutrons together

Atoms come in different versions known as what?

Isotopes

As long as you have the same number of protons, you have the same type of what?

Atom

All atoms of an element have the same number of ____, but the number of ____ may be different.

Protons, neutrons