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because it just is. For more information read the dictionary

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Q: Why is Synthetic Iron Oxide in toothpaste?
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Related questions

How do you use synthetic iron oxide powder?

We want to activate iron oxide mixed with magnessium oxide touse remediation of polluted soils


Is toothpaste a natural or synthetic?

it is synthetic


How is synthetic emery made?

synthetic emery is made by fusing bauxite with coke to produce a black hard abrasive aluminum iron oxide.


What is the name of the ionic compound FeO?

Iron Oxide Its actually Iron(ii) Oxide there is no such thing as iron oxide.


Is rust an element of iron and oxygen called iron oxide?

Rust is not an element but compounds of iron. The brown oxide of iron is ferrous oxide and the black oxide of iron is ferric oxide.


What is the formula for iron (III) oxide?

FeO for ferrous oxide, ( iron(II) oxide); Fe2O3 for ferric oxide, (iron(III) oxide) and Fe3O4 for ferrous ferric oxide, (iron (II,III) oxide)


Is iron oxide a gas?

No, iron oxide is a solid.


What elements are in iron oxide?

We know that iron (Fe) and oxygen (O) make up iron oxide. (There is more than one oxide of iron, by the way.)


What is the iron II oxide formula?

FeO for ferrous oxide, ( iron(II) oxide); Fe2O3 for ferric oxide, (iron(III) oxide) and Fe3O4 for ferrous ferric oxide, (iron (II,III) oxide)


What is the main compound in rust?

The scientific name for rust is iron oxide. It is made up of the elements iron and oxygen. Turning iron to iron oxide is an example of corrosion.


Iron oxide formula?

Iron II oxide: FeO Iron III oxide: Fe2O3


What is the formula for oxygen and iron?

FeO for ferrous oxide, ( iron(II) oxide); Fe2O3 for ferric oxide, (iron(III) oxide) and Fe3O4 for ferrous ferric oxide, (iron (II,III) oxide)