example elements and compound and reason
Answer (1)
Answer:ElementsGold (Au)Reason: Made of only gold atoms; chemically pure and cannot be broken down into simpler substances Oxygen (O)Reason: Composed solely of oxygen atoms (O₂ gas); a pure chemical element that cannot be chemically separated into other substances CompoundsWater (H₂O)Reason: Contains hydrogen and oxygen atoms chemically bonded in a fixed ratio (2:1); has properties different from its individual elements Sodium chloride (NaCl)Reason: Composed of sodium and chlorine atoms bonded in a fixed ratio (1:1); forms salt with properties unlike elemental sodium or chlorine
