C3.1.2 - Formulae of ionic compounds Flashcards
1
Q
What are compound ions?
A
Ions that contain more than one element
2
Q
How do you write the formula for ionic compounds?
A
In any ionic compound the the total number of positive charges must equal the number of negative charges
3
Q
What does Na+ and Cl- make?
A
NaCl
4
Q
What does Mg2+ and O2- make?
A
MgO
5
Q
What does Mg2+ and Cl- make?
A
MgCl2
6
Q
What does Na+ and O2- make?
A
Na2O
7
Q
What does Al3+ and O2- make?
A
Al2O3
8
Q
What are some examples of compound ions?
A
Sulfate - SO42- Hydroxide - OH- Ammonium - NH4+ Nitrate - NO3- Carbonate - CO32-
