Question

describe the structure of a water molecule and explain how that structure results in attractions between water molecules and between water molecules and other substances.

Explanation:

A water molecule (H₂O) has a bent - shaped structure with an oxygen atom at the center and two hydrogen atoms bonded to it. Oxygen is more electronegative than hydrogen, creating a polar covalent bond. This polarity leads to a partial negative charge on the oxygen atom and partial positive charges on the hydrogen atoms. Between water molecules, hydrogen bonds form. The partially positive hydrogen of one water molecule is attracted to the partially negative oxygen of another water molecule. With other substances, if they are polar, water can form dipole - dipole interactions. If they can donate or accept hydrogen bonds (like alcohols), hydrogen bonding occurs. Non - polar substances may experience weak London dispersion forces with water, but water's main mode of interaction with polar substances is through its polar nature and hydrogen - bonding ability.

Answer:

A water molecule has a bent structure with a polar covalent bond due to the electronegativity difference between oxygen and hydrogen. This leads to hydrogen bonding between water molecules and dipole - dipole or hydrogen - bonding interactions with other polar substances, and weak London dispersion forces with non - polar substances.