Chemistry 10 Notes on Naming Compounds and Types of Chemical Reactions.

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Naming Compounds


Metal always on the left

Most left on the periodic table goes on the left (positive charge on left)

Writing Chemical Formula

Writing Compound Name

Just write the name of the elements

Last element takes 'ide'

Roman Numeral is written after the metal if the combining capacity is different

Copper (II) Nitrate

MgS = Magnesium Sulphide


Writing Compound Name

Write prefixes for both elements

'mono' is dropped for the 1st element

1 Mono 6 Hexa

2 Di 7 Hepta

3 Tri 8 Octa

4 Tetra 9 Nona

5 Penta 10 Deca

NO2 = Nitrogen Dioxide

CO = Carbon Monoxide

N2O4 = Dinitrogen Tetroxide

Si2I6 = Disilicon Hexaiodide

Writing Chemical Formula

Compound must have charges that 'equal' out


Some Ionic compounds that attract water from water vapour in their solid state

Hydrated Compounds = w/ Water

Anhydrous Compounds = w/o Water


LiOH*H2O = Lithium oxide monohydrate

Na2CO3*10H2O = Sodium carbonate decahydrate

Cu(NO3)2*6H2O = Copper nitrate hexahydrate

Name compound, and then add the number of waters

Common Acids

HCl = hydrochloric acid

HBr = hydrobromic acid

HF = hydrofluoric acid

HI = hydroiodic acid

HNO3 = Nitric acid

H2SO4 = Sulphuric acid

H2SO3 = Sulphurous Acid

HNO2 = Nitrous acid

Hydrogen atoms = acid

Polyatomic Ions

Two or More

Types of Reactions


2 very simple things (usually elements) join 2gether to form 1 thing

A + B -> AB

Adding water to anhydrous compounds


2Cu(s) + O2(g) -> 2CuO(s)

2Sb + 3Br2 -> 2SbBr3


1 thing breaks apart to form 2 simple things (usually elements)

AB -> A + B

Removing water from hydrated compounds


2Ag2O -> 4Ag + O2



One thing is swapped with another thing

A + BX -> B + AX

Fe + CuSO4 -> Cu...