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Oxides Uncovered

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Questions and Answers

What is an oxide and what is its chemical formula?

An oxide is a chemical compound containing at least one oxygen atom and one other element in its chemical formula. The chemical formula for oxide is O2-.

Why is oxide considered the dianion of oxygen?

Oxide is considered the dianion of oxygen because it bears a net charge of -2.

What is the role of oxides in the Earth's crust?

Most of the Earth's crust consists of oxides.

Give an example of a material that develops an oxide coating and explain its purpose.

<p>Aluminium foil develops a thin skin of Al2O3, called a passivation layer, that protects the foil from further oxidation.</p> Signup and view all the answers

What makes oxides diverse in terms of stoichiometries?

<p>Oxides are diverse in terms of stoichiometries because most elements form oxides of more than one stoichiometry.</p> Signup and view all the answers