Answer: A) a chemical change is required to seperate the elemnts present in it
Explanation:
Water is a compound, since it is the result of combining atoms: hydrogen [tex]H[/tex] and oxigen [tex]O[/tex]. In fact, the chemical formula of water is [tex]H_{2}O[/tex].
On the other hand, chemically in a compound the atoms must be combined in a fixed ratio by mass. In the case of the water molecule, the ratio is 2:1 (For each oxigen atom there are two hydrogen atoms).
So, if we want to separate the atoms that make up the water molecule, it only will be possible by a chemical change and not by a physical one.
Hence the correct option is A.
