Question

Classify the following unto elements and compounds

Iron ,IronSulphide,Oxygen,CarbonUrea,Sodium,Chalk,Washing soda,Gold

Answer 1

Iron-Element
Iron Sulphide - Compound
Oxygen - Element
Carbon Urea - Compound
Sodium - Element
Chalk - Compound
Washing Soda - Compound
Gold - Element
hope it will help u :)

Answer 2

Iron(Fe) , Gold(Au) , Carbon(C) , Sodium(Na) are elements.
Oxygen(O2) is a molecule.
Washing Soda(Na2CO3.10H2O) , Chalk(CaCO3) , Iron sulphide(FeS) and urea are compounds.