Cobalt is a metal that is used to make batteries, magnets, and jewellery.
It is a silvery-blue metal that is hard and strong.
Cobalt is a precious metal, and it is often used in jewellery because it is shiny and durable.
The cobalt-containing mineral was found in the mine.
Noun:
Singular: cobalt.
Adjective:
Cobaltous: containing cobalt.
Cobaltic: containing cobalt in a higher oxidation state.
Verb:
Cobalt: to treat with cobalt.
The word “cobalt” comes from the German word “kobold” or “kobolds,” which means “goblin” or “dwarf.” The word “kobold” was used by miners to refer to the mischievous spirits that they believed lived in the mines and caused problems.
Describe what cobalt looks like.
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