Oxides contain one or two metal elements combined with what?

Oxides contain one or two metal elements combined with what?

Correct Answer: oxygen
ethanol
nitrogen
carbon

Explanation: Earth’s crust contains a lot of oxygen. The oxygen combines with many other elements to create oxide minerals. Oxides contain one or two metal elements combined with oxygen. Oxides are different from silicates because they do not contain silicon. Many important metals are found as oxides. For example, hematite and magnetite are both oxides that contain iron. Hematite (Fe 2 O 3 ) has a ratio of two iron atoms to three oxygen atoms. Magnetite (Fe 3 O 4 ) has a ratio of three iron atoms to four oxygen atoms. Notice that the word “magnetite” contains the word “magnet”. Magnetite is a magnetic mineral.

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