5 Questions
What are solid inorganic substances in the earth's crust with fixed chemical composition and estimable physical properties known as?
Minerals
Which metals are usually found in free form in the earth's crust?
Gold and platinum
From where are metals extracted?
Minerals
What are minerals containing a high percentage of a particular metal and from which the metal can be easily and profitably extracted called?
Ores
What is the relationship between minerals and ores?
All ores are minerals but all minerals are not
Test your knowledge of the earth's crust and the occurrence of metals with this quiz. Explore how metals are found in free or combined states and how their reactivity affects their form. Delve into the world of inorganic substances and their natural occurrence in the earth's crust.
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