Proton
Identity of the atom (charged positively)
Neutron
Changes mass and create isotopes
Mass Number
Protons and neutrons added together
Isotope
Same atom, different number of neutrons
Electron
Negative charge
Ion
A charged atom (whether it is negative or positive)
Protons have a ____ charge
Positive
Electrons have a ____ charge
Negative
What is the relationship between atomic mass and mass number?
The mass number is the atomic mass rounded to the nearest whole number