FeO2= is a ferric ion where FeO3- is a ferrous ion.
stony, stony iron and iron
It's Stony, Stony iron and iron.
There are 3 main classifications of meteorites; Stony-iron meteorites, Iron meteorites and Stony meteorites. Stony-iron meteorites are mainly composed of meteoric iron which can be also found in Iron meteorites, Iron meteorites commonly contains iron nickel alloy and the Stony meteorites are the meteorites consists of silicate.
Because the rusting of iron is based on a chemical change, a reaction of oxydation.
pig iron, wrought iron and cast iron. These are broad classifications used commercially, they can be subclassified. Chemically we say that its pure or impure, contains sulphur/phosphorous/impurities(slag, etc.)/carbon in so and so % range
Felsic and Mafic are two very broad classifications for igneous rocks. This is based on their composition. Felsic rocks are rich in silicon and aluminum (e.g. granite) while Mafic rocks have higher concentrations of magnesium and iron (e.g. basalt).
what are the classifications of food industry/
Phenetic classifications
The two classifications of critical information are unclassified and classified.
Racial classifications are groups of physical characteristics. The 3 most common racial classifications, going by bone structures, are Caucasoid, African, and Asiatic.
In early taxonomic classifications, factors such as genetic relationships and evolutionary history were not considered. These classifications were largely based on physical characteristics and morphology. Additionally, ecological roles and behavior were often overlooked in early classifications.
The two classifications of wood are hardwood and softwood.