Biology / Bio 0115 · Atom · ~20 seconds
Atomic Number and Mass Number
Video not yet published
to the StudyWalks catalog
to the StudyWalks catalog
State
An atom's atomic number counts its protons, and its mass number counts its protons and neutrons together.
Show
Carbon's atomic number is six, meaning every carbon atom has six protons, whatever its number of neutrons.
Watch for
The atomic number identifies the element; the mass number can vary between atoms of the same element.