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Earliest Known Chemical Elements

Can you name the elements discovered before 1780?
Source = http://www.lenntech.com/periodic-chart-elements/discovery-year.htm
Quiz by joez
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First submittedMay 10, 2017
Last updatedMay 10, 2017
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year of discovery
element
ancient
antimony
ancient
copper
ancient
gold
ancient
lead
ancient
mercury
ancient
silver
ancient
sulfur
ancient
tin
circa 1400
bismuth
1669
phosphorus
circa 1694
carbon
year of discovery
element
1735
iron
1735
platinum
1751
cobalt
1751
nickel
1755
magnesium
1772
nitrogen
1774
chlorine
1774
chromium
1774
manganese
1774
oxygen
1776
hydrogen
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