FUSE Winter 2017-2018 - Page 8

FUSE Young Reporter iSCIENCE Tin has been used since Ancient times and probably gets its name from the Anglo- Saxon word...’tin’ or the Etruscan God, Tinia. Tin was once as valuable as silver and is a highly ‘workable’ metal that could be turned into many things like jewellery, coins and special dishware. At normal room temperatures, tin is stable and does not rust, corrode or react to water or oxygen (air). This is why it is so oft en used alone or as a coating to protect other metals in ‘tin cans’, huge sheets in building construction and even molten ‘solder’ that joins metal parts. ODERN ANCIENT TO M The Bronze Age bega n at diff erent times across the wor ld (between around 3500 BC and 2000 BC) until about 500 BC. Ancient peoples discovered they could melt tin (10%) and copper (90%) co mpounds together and make th e ‘alloy’ mixture of...bronze! Bronze became popu lar because it was tougher than pu re copper. But tin is very scarce (aro und the 50th element in the Earth’s crust -about 1 to 2 parts of tin per m illion) and needs to be extracted from an ‘ore’, usually cassiterite. Even so, a tin ring an d pilgrim bottle were in an Egyptian to mb from the eighteenth dynasty (15 80–1350 BC) and pure tin was foun d at Machu Picchu, the ancient m ountain citadel of the Incas. WEB TIPS s/z874kqt www.bbc.co.uk/guide n/clips/zssnfg8 atio uc /ed .uk e_timeline/145/ www.bbc.co elines/the_bronze_ag /tim www.softschools.com 8 FUSE