Trimester 2 Unit 2 Flashcards
What is chemical bonding
when atoms form new, more stable substances
What is Ionic Bonding
the positive and negative ions form and attract each other, holding the structure together (it’s a strong bond)
Ionic bonding only happens between a
nonmetal and metal
Atoms ionically bond to become a
neutral compound
when writing ionic formulas always write this first
the metal
What do Polyatomic Ions mean
multiple atoms that carry a charge
almost all polyatomic ions are
negatively charged
if you need multiple of one thing in a polyatomic formula you put it
in parentheses and put a subscript outside
generally, names for polyatomic ions end in
-ite or ate
why are transition metals special?
they can have multiple charges and form from only positive ions
How do we find the charge of a transition metal
roman numeral in the name determines the charge
I
1
ll
2
lll
3
IV
4