![]() ![]() Increased drag is also a factor even in solution, Molecular chains leads to enhanced intermolecular attractions that contribute toĪ resistance to flow. Strongly than the shorter ones in the gasoline, so gasoline flows much moreįor similar reasons, oligomers and polymers, if they are liquids,Īlso display high viscosity. Longer hydrocarbon chains in the motor oil cling to each other much more London dispersion forces, where a small advantage goes a long way. Hold onto each other, and this factor is especially important in very weak Intermolecular interactions is also crucial in determining how tightly two molecules The molecules areīigger, and so they experience more drag as they move through the liquid. ![]() Motor oil contains much longer hydrocarbon chains. The major difference between motor oil and gasoline is that the Weaker than those between sugar molecules they're just London dispersionįorces. The intermolecular attractions between the molecules are much Gasoline are composed of the same class of compounds, hydrocarbons, composed ofĬarbon chains covered in hydrogen atoms. The motor oil example works in a similar way. Molecules move past each other in the very concentrated solution, they cling toĮach other, slowing down the flow of the liquid. OH or hydroxyl groups that are capable of strong hydrogen bonds. Individual sugar molecules are also a major factor. The strong intermolecular attractions between the Molecules in the water are much larger than the water molecules, so theyĮxperience a lot more drag as they move through the solution compared to just Why is honey so viscous? Partly it's just that the sugar With some oligomers, which are short-chain polymers that can be liquids Viscosity is something honey has in common with polymer solutions, as well as Monosaccharides such as glucose and fructose. The sugars aren't polymers, either they are simple Molecules produced by the plants from which the bees gathered the nectar to make It contains a little bit of water and a whole lot of sugars, plus other small The honeyĭoesn't flow very easily, especially compared to something like water. Is often decribed in very general terms as "resistance to flow". It resists the movement of the spoon when we stir it. Water is much easier to stir or to pour than honey. For example, we say that honey is more viscous than water. Viscosity is a term we use to describe the "thickness" of different Let's start with a property that you are probably familiar with. Properties that aren't easily replicated by other materials? Polymers have come to occupy a very important niche in the materials ![]()
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