Formulae and Equations - 6

Positive ion first followed by the negative ion

Metal and then non-metal

Oxide

mono, di, tri, tetra, penta & hexa

No

It is the number of electrons taken in or given away in bonding or involved in bonding

1 & +1

2 & +2

$OH^-$

$NO_3^-$

$CO_3^{2-}$

$SO_4^{2-}$

$NH_4^+$

It is a group of different atoms covalently bonded as one unit but with charge distributed over the unit. They react as a single group.

Add brackets to them if there is a subscript after it

-ite or -ate

HCl

$H_2SO_4$

$HNO_3$

$NH_3$

$CH_4$

A substance that is dissolved in water to form a solution

Sodium, potassium, ammonium and nitrates. Yes

lead (||) & silver

calcium, lead (|||) & barium

sodium, potassium & ammonium

Oxygen and Hydrogen and between those 2, balance the one with lowest number first

Substances present in a chemical reaction but do not take part in it and therefore remain unchanged

1. Write all the compounds in word form 2. Write all the compounds in chemical form 3. Balance the equation by making sure the same number of atoms exist on both sides 4. Write out the state symbols

1. Rewrite the substances as their constituent ions 2. Cancel out the spectator ions on both sides