Ions Flashcards
1
Q
How do ionic compounds occur?
A
They occur when you bond a metal ion and a non-metal ion.
2
Q
Give an example of an ionic compound.
A
Calcium (metal) +2 and Chlorine (non-metal) -
> Ca2Cl
3
Q
What’s the first step of making an ionic compound?
A
Identify the charges > Ca and 2Cl-
4
Q
What’s the second step of making an ionic compound?
A
Get rid of the charges (get rid of the +/-) > Ca2Cl
5
Q
What’s the last step to making an ionic compound?
A
Drop and swap the charges > CaCl2
6
Q
What are cations?
A
An atom that has a positive charge because they lose electrons.
7
Q
What are anions?
A
An atom that has a negative charge because they gain electrons.
8
Q
Define a polyatomic atom.
A
A group of atoms with a charge, e.g. PO4^-3 (this is called phosphate).
