Why is sugar not a liquid?

Sugar is a solid at room temperature because its molecules are held together by strong intermolecular forces called hydrogen bonds. These bonds form between the oxygen atoms in the sugar molecules and the hydrogen atoms in the hydroxyl groups (-OH) of other sugar molecules. These bonds create a rigid structure that prevents the sugar molecules from moving freely, causing the substance to be solid.

In contrast, liquids are characterised by weak intermolecular forces, which allow their molecules to move freely past each other, resulting in a fluid state.