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lived in the middle east
stone age - Metals had not been discovered yet
learned how to control fire (this was a major advancement)
Could not cook food or make tougher tools
made glass and ceramics -
Chemists investigated materials that were high in value to humans (Gold and copper)
they were valuable because of their color, lustre, ductility, malleability, and durability
Copper was used in pots, coins, and jewelry. they could not be used as weapons because it was too soft -
bronze was made of tin and copper
copper was too soft on its own so they made bronze
people used bronze for weapons and armor
the discovery of bronze was by accident
together the substances were strong and less brittle. -
The Hittites discovered it
they learned how to extract iron from rocks
the age began
They combined iron with carbon and made steel
steel made sharper blades
and stronger armour -
Greek Philosopher Aristotle supported another hypothesis thinking everything was made up of earth, air, fire, and water.
his arguments were held for almost 2000 years