Fats (or triacylglycerols) are uncharged esters of glycerol. In other words, a fat is a glyceride in which glycerol has been esterified with three fatty acids.

The degree of saturation of a triglyceride is a major determinant of the melting point. The greater the degree of saturation, the higher the melting point because the straighter chains allow greater access for mutual interaction through London dispersion forces, thus increasing the electrostatic force of attraction between the molecules. This means that greater internal energy increase is required to separate saturated fats from each other in phase change.

The hydrocarbon chains of a fat represent a more highly reduced form of carbon than in carbohydrates such as glucose. This makes fats very concentrated stores of metabolic energy.

The WikiPremed MCAT Course is a comprehensive course in the undergraduate level general sciences. Undergraduate level physics, chemistry, organic chemistry and biology are presented by this course as a unified whole within a spiraling curriculum. Please read our policies on Privacy and Shipping & Returns.  Contact Us. MCAT is a registered trademark of the Association of American Medical Colleges, which does not endorse the WikiPremed Course. WikiPremed offers the customers of our publications or our teaching services no guarantees regarding eventual performance on the MCAT.

Creative Commons License
WikiPremed is a trademark of Wisebridge Learning Systems LLC. The work of WikiPremed is published under a Creative Commons Attribution NonCommercial ShareAlike License. There are elements of work here, such as a subset of the images in the archive from WikiPedia, that originated as GNU General Public License works, so take care to follow the unique stipulations of that license in printed reproductions.