element: The Elements through the Ages

Some elements have been known since antiquity. Gold ornaments from the Neolithic period have been discovered. Gold, iron, copper, lead, silver, and tin were used in Egypt and Mesopotamia before 3000 b.c. However, recognition of these metals as chemical elements did not occur until modern times.

Sections in this article:

• Introduction
• Discovery of the Elements
• Evolution of Modern Concepts
• Greek Concept of the Elements
• The Elements through the Ages
• Official Symbols and Names for the Elements
• Properties of the Elements
• Atomic Mass and Atomic Weight
• Isotopes
• Atomic Number and Mass Number
• The Atom
• Bibliography

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