Question

Why are fats solid at room temperature?

A) High degree of unsaturation
B) Presence of cis double bonds
C) Saturated fatty acids
D) Low molecular weight

Answer 1

Saturated fats are solid at room temperature because they can pack closely together into a crystal lattice, while unsaturated fats with cis double bonds have a bent shape that prevents them from stacking neatly.

Step-by-step explanation:

Saturated fats are solid at room temperature due to their straight molecule configuration, allowing them to pack closely together into a crystal lattice and form strong intermolecular attractions. On the other hand, unsaturated fats with cis double bonds have a pronounced bend in their molecules, preventing them from stacking neatly and weakening their intermolecular attractions, resulting in lower melting points and liquid form at room temperature.