Matter l Atoms l Atomic and Mass numbers l Electron configurations l Drawing atomic structure l

Elements l Molecules l Compounds l History of periodic table l

Bonding l Examination questions l Online Quizzes l Teachers Corner l

AN INTRODUCTION TO CHEMISTRY
It's "ELement"...al....!!

This lesson is an introduction to Chemistry for Junior Certificate Science and is centred around the Elements as the building blocks of Chemistry. It concentrates on the first 20 elements as required for Junior Certificate.

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III

VII

VIII

Where to begin?

Start with a simple definition below - click on the link to get more information

View a PowerPoint demo of Ionic Bonding (709 KB) or Covalent Bonding (63KB)
(Click mouse to advance from one slide to next)
or download the PowerPoint demo for viewing at your leisure
Ionic Bonding (709 KB) or Covalent Bonding (63Kb)
(Right Click, Save Target as..)

Have a look at an Interactive Periodic Table or

Be adventurous ....begin with one of the following Web Quests

Element ADventure WebQuest

It's All About Bonding

Atomic Structure

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3KB)(63KB)

		Matter is anything that occupies space and has mass.
		An atom is the smallest particle of an element which still retains the properties of that element.
		An element is a substance which cannot be split up into simpler substances by chemical means.
A molecule is a group of two or more atoms joined together chemically.

A molecule is the smallest part of an element or compound that can exist independently.
		A compound is formed when two or more elements combine together chemically.
		Chemical Bonds are formed when two or more elements combine together chemically - view a demo of bonding
		Test yourself! Prove what you know! Immediate result
		Check out some past examination questions
		Guidelines for teachers