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Poster on Dental Amalgam - Chemistry

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My Name Period 7 DENTAL AMALGAM Dental amalgam?is a?dental?filling material?used?to fill cavities caused by tooth decay. It has been?used?for more than 150 years in hundreds of millions of patients.?Dental amalgam?is a mixture of metals, consisting of liquid mercury (50%), and a powdered alloy composed of silver (~22-32%), tin (~14%), copper (~8%), and traces of indium and palladium. In 1819, a Mercury-based dental amalgam filling was invented?by the English chemist, Bell.

Important Trade Routes

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This is a condensed information sheet of the major trade routes in world history. The Silk Road -Main commodities that were traded on this route were: Silk Porcelain Tea Weapons Metal work Spices Gold Silver Amber Brassware Jade Sugar Horses Cotton Salt Incense -The Silk Road was created during the Han Dynasty. The Han Dynasty and the Roman Empire used this series of trade routes to trade. -The Silk Road was safest during the time of Mongol Empire. This time period was known as the Pax Mongolica in the 13th century. This led to the spread of ideas and cultures throughout East and West Asia. The Indian Ocean Trade -South Asia traded with East Africa
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