c2 cognition Flashcards
1
Q
what is an ion
A
its a charged partial
2
Q
when are ions formed
A
when atoms gain or lose electrons in order to get a fuller outer shell
3
Q
what dose the periodic table help us see
A
the group number tells us how many electrons the atoms of that group have the outer most shell
for example group 1 has 2 electrons in there outermost shell
4
Q
what dose losing and gaining electrons require
A
energy and most likely to do from ions use less energy
5
Q
how many electrons does groups 3,4,5 have to gain or lose
A
3 or 4 electrons require lots of energy
6
Q
A
