![]() ![]() ![]() Fat molecules are a very common form of lipid, in fact this is an example of a fat molecule, or a triglyceride right over here. Now for those of you who are familiar with the term you might associate it with things like fat molecules, and that would not be incorrect. This means there will be no dipole, and no slight electric charges. Carbon and Hydrogen have very similar electronegativity, and as such no one partner of the covalent bond will 'hog' the electrons. As Sal said in this video, charged particles dissolve in water, so this will be hydrophilic. This will cause the oxygen to be slightly negatively charged while the hydrogen is slightly positively charged. Oxygen is more electronegative then hydrogen, and will 'hog' the electrons if you will. This will induce what is called a dipole, or a partial negative charge around one atom and a partial positive charge around another. Not all covalent bonds are equal in many cases electrons will more closely associate with one atom then the other in a covalent system. The one exception to this is hydrogen, which has a similar electronegativity as carbon. Fluorine is the most electronegative, and elements get less electronegative as you go left and down on the periodic table. Ignoring the noble gases (last column on the periodic table of elements) and starting with Fluorine (Element #9, labeled F), we can look at the relative electronegativity of a given element. Simply put, this is a scale that measures how badly a given atom will 'want' electrons. ![]() One important concept to know is electronegativity. However, the interactions between elements in a molecule can give them different properties. You probably know that all elements of the same type are essentially the same a hydrogen you found in a water molecule (H20) is the same as a hydrogen in a methyl molecule (CH3). This is a great question it may not be completely intuitive to most people. ![]()
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