5 Questions
Which metal is found in the free state in the earth's crust?
Gold
Why are the ores of many metals oxides?
Because oxygen is a very reactive element and is abundant on the earth
Which metal is never found in nature as a free element?
Sodium
In what form are the moderately reactive metals found in the earth's crust?
Oxides, sulphides, or carbonates
Which metal is found in the earth's crust in the combined state as sulphide or oxide ores?
Copper
Study Notes
Metals in the Earth's Crust
- Copper is found in the free state in the earth's crust.
Metal Ores
- Many metals are found as oxides in their ores because oxygen is abundant in the earth's crust and readily combines with metals.
Metal Properties
- Mercury is never found in nature as a free element.
Reactive Metals
- Moderately reactive metals are found in the earth's crust in the form of compounds such as sulphides, oxides, or carbonates.
Metal Ores (continued)
- Zinc, lead, copper, and nickel are found in the earth's crust in the combined state as sulphide or oxide ores.
Test your knowledge of the reactivity series of metals and their extraction from ores with this quiz. Explore the properties of different metals and their compounds, and learn about the reactivity trends in the periodic table. Challenge yourself with questions about the extraction of metals from their ores and the occurrence of metals in the Earth's crust.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
