BONUS- Option 2: Dietary lipids (triacylglycerols) can be classified as saturated fats or unsaturated fats. Which is a solid at room temperature? Which is a liquid at room temperature? How is the melting point related to intermolecular forces and structure? Explain. Solution saturated fats are solid at room temperature and unsaturated fats are liquids at room temperature. Saturated fats are long chains of hydrocarbons which pack tightly with each other due to hydrophobic interactions and form high density of intermolecular contacts. So they are solids at room temperature. Unsaturated fats are irregular in shape and cannot pack tightly. So, they are liquids at room temperature. .