Yes it is....
Iron (III) Oxide ( or, the older term, Ferric Oxide )
Ferric oxide is not a covalent compound, it forms a large ionic lattice.
Ferric oxide, an alternative name for iron (III) oxide, is a compound.
Ferric chloride is an ionic compound (and is classified as a salt).
FeO is Iron(II)oxide, archaically , Ferrous oxide. Do NOT confuse with Fe2O3, which is Iron(III)oxide ; Archaically Ferric oxide. The 'iron' atom is in different oxidation states for these two compounds. NB 'Fe' is the chemical symbol for 'Iron', and comes from Latin 'Ferrum' for iron.
Calcium oxide is an ionic compound.
Oxygen is a chemical element and ferric oxide is a chemical compound: they are not "changes".
The ferric oxide is a chemical compound.
Chlorine oxide would be a covalent compound, and not an ionic compound.
Iron oxide is an ionic compound.
Yes. Barium oxide is an ionic compound. Generally a metal with a nonmetal will form an ionic compound.
Iron oxide (ferric oxide)