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Tutorial Index

Introduction to Elements, Atoms, Molecules,
Compounds and Chemical Bonding

Introduction to Chemical Bonding
Non-metal Radical Groups
Names of Acids and other compounds
Introduction to Chemical Reactions, the
Rules and the products of a reaction

Types of Chemical Reactions I
Types of Chemical Reactions II
Introduction to the Periodic Table
Using Chemical Formulae
Balancing Chemical Equations

The Chapters Index

 

Metals and Non-metals

Elements can be separated into two main groups : metals or non-metals.

These tables show you to which group the elements you will be using belongs.

 

Metals

Sodium

sodium

Potassium

potassium

Iron

iron

Copper

copper

Calcium

calcium

Aluminium

aluminium

 

Non-metals

Hydrogen

hydrogen

Oxygen

oxygen

Nitrogen

nitrogen

Sulphur

sulfur

Carbon

carbon

Chlorine

chlorine

Test Yourself
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THE LANGUAGE OF CHEMISTRY

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Making Compounds

Now we can have some fun making compounds. The table below gives you a few examples:

Remember the Rule : All of the bonding arms must be used!

 

Name of compound

Atoms required

Molecule

Notes

sodium chloride

Sodium

Chlorine

Sodium Chloride

Both sodium and chlorine have one bonding arm. One chlorine atom is needed to bond with one sodium atom.

calcium oxide

Calcium

Oxygen

Calcium oxide

Both calcium and oxygen have two bonding arms. One calcium atom is needed to bond with one oxygen atom.

hydrogen sulphide

Hydrogen

Sulphur

Hydrogen sulphide

The hydrogen atom has one bonding arm. A sulfur atom has two. Two atoms of hydrogen are needed to join with the sulfur atom.

iron II chloride

Iron

Chloride

Iron II chloride

The name tells us that iron has two bonding arms in this compound. Chlorine has one. Two chlorine atoms are needed to bond with one iron atom.

Test Yourself
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Exercise
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You may have noticed that metals never make chemical bonds with other metals. Non-metals, however, can make chemical bonds with either metals or other non-metals.

 

 

 

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