How is the molecular composition of water represented in chemical terms?
Show answer & explanation
Correct answer: C
Explanation
Correct Answer
H₂O
Explanation
The molecular composition of water is represented by the chemical formula H₂O. This formula indicates that a single molecule of water is composed of two hydrogen atoms covalently bonded to one oxygen atom. The 'H' represents hydrogen, 'O' represents oxygen, and the subscript '2' denotes the two hydrogen atoms present in the molecule.
Key Points
Water is a polar molecule, meaning it has a partial positive charge on the hydrogen side and a partial negative charge on the oxygen side. This polarity allows water to form hydrogen bonds with other water molecules, which is responsible for its unique properties, such as high heat capacity, cohesion, adhesion, and its ability to act as a universal solvent.
Important Questions and Answers
Question: What type of chemical bond holds the atoms together within a water molecule?
Answer: Covalent bond.
Question: Why is water considered a polar molecule?
Answer: Because of the unequal sharing of electrons between the oxygen atom and the hydrogen atoms, creating a dipole moment.