Why does olive oil solidify in fridge?
Show answer & explanation
Answer: Fats crystallize at cold temp
Fats crystallize at cold temp ✓ — Correct! Olive oil contains monounsaturated and saturated fats with different melting points. When refrigerated (below ~7°C/45°F), saturated fats crystallize and solidify, making oil cloudy and thick or even hard. It's reversible—warming returns it to liquid. This happens to many oils; it's not spoilage, just physics!
Chemical reaction with air — Wrong. Solidification is a physical change (crystallization), not chemical. It's reversible by warming.
Loss of dissolved oxygen — Wrong. Oxygen doesn't affect solidification. The change is purely from temperature affecting fat crystal formation.