25.2 Isotopes Flashcards
1
Q
isotopes
A
two atoms of the same element, but with different number of neutrons
2
Q
what stays the same or changes with isotopes of the same element?
A
same: Z/number of protons
different: A/number of neutrons
3
Q
atomic weight
A
weighted average of the masses of natural isotopes of an element
4
Q
formula for atomic weight?
A
Atomic weight (AW) = (% isotope) (mass isotope)