2.1 Flashcards
1
Q
what determines isotopes
A
mass
2
Q
protons are the same=
A
same reaction
3
Q
what does the valence electron do
A
cause chemical reactions
4
Q
where are valance electrons
A
very outer layer
5
Q
what are isotopes
A
the same number of protons, different numbers of neutrons
6
Q
why are isotopes useful in scientific research
A
determining different levels of radiations
