2.1.2 Compounds, formulae and equations Flashcards
(12 cards)
1
Q
what are cations
A
- positive ions formed by atoms (metals) losing electrons
2
Q
what are anions
A
- negative ions formed by atoms (non-metals) gaining electrons
3
Q
what is a binary compound + how to name it
A
- contains 2 elements only
- use name of first element but change ending of second element’s name to -ide
- for ionic compounds the metal ion always comes first
4
Q
what is the ionic formula for nitrate
A
NO3 -
5
Q
what is the ionic formulae for sulphate
A
SO4 2-
6
Q
what is the ionic formulae for carbonate
A
CO3 2-
7
Q
what is the ionic formulae for hydroxide
A
OH -
8
Q
what is the ionic formulae for ammonium
A
NH4 +
9
Q
what is the ionic formulae for zinc
A
Zn 2+
10
Q
what is the ionic formulae for silver
A
Ag +
11
Q
what is the ionic formulae for sulphide
A
S 2-
12
Q
if the ion name ends with ide or ate what is the difference
A
- ide contains just the element
- ate contains oxygen as well
