8.1 Writing Chemical Formulas Flashcards
(7 cards)
1
Q
Chemical formula
A
Shows the elements and their ratio in a compound
2
Q
Polyatomic ions
A
A group of atoms that tend to stay together & carry an overall charge
3
Q
Ion charge
A
Written in top left subscript of element or polyatomic ion
4
Q
Most polyatomic ions are negative because
A
The ions behave as non-metals in a compound
5
Q
Polyatomic ions are treated as
A
As if it were a single element’s ion
6
Q
If two or more polyatomic ions occur in formula then…
A
The formula for the polyatomic ions is enclosed in brackets
7
Q
Polyatomic ion endings do or do not change?
A
Polyatomic ion endings never change
