The difference between pig iron and iron oxide
Pig iron is an alloy of carbon and iron, iron is a single substance, and iron oxide is a compound (Fe2O3)
Pig iron is a mixtureIron is a simple substanceIron oxides are compounds and substances
Pig iron usually refers to a small amount of carbon in ironIron is generally pure pure substanceIron oxide is a compound of iron and oxygen, that is, rust
