Iron is a chemical element.
Iron pellets are not a compound or an element on their own. They are a form of iron that consists of multiple iron atoms bonded together. Iron itself is an element, but when it is in the form of pellets, it is a physical mixture of iron atoms.
Iron sulfate is a compound, not an element. It is made up of iron (Fe) and sulfate (SO4) ions, which combine to form the compound FeSO4.
Hydrogen is known as a element and a compound. Hydrogen is a light element with one proton and a gas compound with two hydrogen atoms.
Compound
iron oxide(rust) - Fe2O3
Rusting is also called as the process of slow eating of metals. It takes place in various metals and has no fixed composition. Basically, it is the reaction of some gas and the moisture in the atmosphere with the metal which leads to rusting. Commonly we relate rusting with iron which reacts with oxygen in the atmosphere and forms iron oxide. Also, silver rusts too leading to its black colour.
For example sodium hypochlorite (NaClO) is a bleach compund.
Element's have only one atom, while compund's have more that one atom.
Iron Oxide Chlorine (Cl) is a green gas.
Sand is NOT an element. Iron IS an element.
Iron is a element, it isn't a compound
pure water is a compund because it's contain hydrogen & oxygen .