Assertion: graphite | /r/HasProperty | identical
Facets:
value: with charcoal
type: OTHER
value: with a small admixture of iron
type: OTHER
Source sentences:
text: In 1779, Carl Wilhelm Scheele showed that graphite, which had been thought of as a form of lead, was instead identical with charcoal but with a small admixture of iron, and that it gave "aerial acid" (his name for carbon dioxide) when oxidized with nitric acid.