Naming Compounds P

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Naming Compounds

K Warne

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http://www.warnescience.net/



Naming Compounds

LiCl

First element (Metal) -

given full name “Lithium”

Lithium chloride

Non-metal (Chlorine)

“ide” added to end of

name

NaFsodium flouride

H2Ohydrogen oxide

Li Cl

Na F

OH

H

If there is more than one of

atom of any element we show

this with a number (subscript)

placed after that symbol.

Two hydrogens bonded to one oxygen





Naming Compounds - Rules1. The first element in the formula/name is usually the

leftmost element on the periodic table. (Same group top

one first.)

2. The name of the second element is usually changed with

a SUFFIX ~ “ide”.

3. If the second element has a number AFTER it then you

must add a PREFIX di (2), tri(3), tetra(4) etc.

LiCl Lithium chloride

MgCl2Magnesium dichloride

SO2 - sulphur dioxide



Common Substances Containing

Polyatomic IonsThese polyatomic ions are common and must be known. (Name

and formula)

NAME FORMULA USE

Calcium Carbonate

(Marble)

Produces carbon

dioxide

Sulphuric Acid Car Batteries

Industry

Ammonium Nitrate Fertilisers

Explosives

Sodium Hydroxide

(Caustic Soda)

Drain Cleaner

Pools, Soap

Potassium

Permanganate

Disinfectant

Various reactions



Naming Compounds examples

1. Na2O - sodium oxide

2. NaCl - sodium chloride

3. CaCO3 calcium carbonate

4. NaOH sodium hydroxide

5. CO2 - Carbon dioxide

H/W Do the general knowledge

questions on the Compounds

page. (9.2, 9A)

6. Na2SO4 sodium sulphate

7. CaO - Calcium oxide

8. CuSO4 copper sulphate

9. SO3 - Sulphur trioxide

10. H2SO4 hydrogen sulphate

Ca(NO3)2 calcium nitrate





Stock Notation• Only used for positive valences.

• Only used for metals. (NO2 is nitrogen dioxide)

• The valencies must add up to the overall charge on the molecule.

1 Ag2OSilver (I) oxide 3 CuS Copper (II) sulphide

2 PbBr Lead (I) bromide 4 MnO4Manganese (VIII)

oxide

Try and name the following examples.

Ag - =O

Ag-

Valencyof metal





Polyatomic IonsThese polyatomic ions are common and

must be known. (Name and formula)

Ion NAME ION NAME

OH- Hydroxide CO32- Carbonate

NO3- nitrate PO4

3- Phosphate

NO2- Nitrite NH4

+ Ammonium

MnO4- Permanganate H3O

+ hydroxonium

SO42- sulphate CH3 COO- ethanoate

SO32- sulphite

S2- sulphide





Common Substances Containing

Polyatomic IonsThese polyatomic ions are common and must be known. (Name

and formula)

NAME FORMULA USE

Calcium Carbonate

(Marble)

Hydrogen sulphate

Sulphuric Acid

Ammonium Nitrate

Sodium Hydroxide

(Caustic Soda)

Potassium

Permanganate





Naming Substances

1. K2SO4

Potassium

sulphate5. NH4OH

Ammonium

hydroxide

2. NH4ClAmmonium

chloride6. Na2CO3 Sodium carbonate

3. Ca(OH)2 Calcium hydroxide 7. Cu(NO3)2 Copper (II) nitrate

4.H3PO4

Hydrogen

phosphate8. FeSO4 Iron (II) sulphate





Balancing Equations1. Check the numbers of atoms on each side of the arrow.

Li + O2 Li2O

LiO O

Li

Li O

Li

LiLi

Li

Li O+

4Li + O2 2Li2O

Li O O Li

Li O

Lithium metal and oxygen gas react to form lithium oxide





Balancing ExamplesNa + O2 --> Na2O

2Mg + O2--> 2MgO

2Ca + O2 --> 2CaO

S + O2 --> SO2

4Na + O2 --> 2Na2O

2Mg + O2--> 2MgO

2Ca + O2 --> 2CaO

S + O2 --> SO2

Fe + O2 --> FeO 2Fe + O2 --> 2FeO

H2 + O2 --> H2O 2H2 + O2 --> 2H2O





Hi -

This is a SAMPLE presentation only.

My FULL presentations, which contain loads more slides (with all the gaps filled in) as well as

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Have a look and enjoy!

Keith Warne






Naming Compounds P

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