Aluminum oxide
Definition
Aluminum oxide is a compound formed by combining two atoms of aluminum and three atoms of oxygen. It has the chemical formula Al2O3 and is commonly known as alumina.
Related terms
Oxide: A compound composed of oxygen combined with another element.
Compound: A substance formed by chemically combining two or more elements.
Chemical Formula: A representation that shows the types and numbers of atoms in a compound.
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Practice Questions (1)
The enthalpy changes for the formation of aluminum oxide and iron (III) oxide are 2Al(s) + 3/2 O2(g) → Al2O3(s) ΔH° -1676 kJ/mol and 2Fe(s) +3/2 O2(g) → Fe2O3(s) ΔH° -824 kJ/mol. What is the ΔH° for the reaction Fe2O3(s) + 2Al(s) → Al2O3(s) + 2Fe(s)?
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Cram Mode
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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.