Final answer:
Marble and water are both chemical compounds because they consist of at least two elements combined chemically.
Step-by-step explanation:
A compound is a substance that results from the combination of two or more elements in a constant ratio. When two or more elements combine chemically, a chemical reaction occurs, resulting in the formation of a compound. In the case of marble and water, they are both chemical compounds because they consist of at least two elements combined chemically.
Marble is composed mainly of calcium carbonate (CaCO3). It is formed when calcium ions (Ca2+) and carbonate ions (CO32-) combine chemically. Water, on the other hand, is composed of two hydrogen atoms (H2) chemically bonded to one oxygen atom (O). The chemical formula for water is H2O.
In summary, marble and water are both chemical compounds because they are composed of at least two elements that are chemically combined in a fixed ratio.