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Why are Polyunsaturated fatty acid often liquid at room temperature?
Wiki User
∙ 12y ago
kinks in chains cause them to pack less closley which = less intermolecular forces occurring e.g. vander waals
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoBecause the kinks where the Cis double bonds are located prevent the molecules from packing closely enough to solidify
Wiki User
∙ 11y agoUnsaturated fats are devoid of hydrogen and have carbon-carbon double bonds which makes them kink and pack poorly. This keeps them liquid at room temperature.
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Fatty acids containing at least one double or triple covalent bond is called?
These fatty acids are called saturated fats. These are often some of the worst fats for the body.
Glycerol and fatty acids are found in what type molecule?
Unreacted fatty acids are rare in nature, but most fats and oils are triglycerides of fatty acids, and the acids can be recovered by hydrolyzing the triglycerides. This process is sometimes called "saponification" when the hydrolysis is aided by strong alkali, as in that instance the primary products (aside from glycerin) are salts of fatty acids, which are often good soaps.
Can the temperature at which a substance melts is the same temperature at which it changes from liquid to solid?
Yes. Melting point is changing from a solid to liquid & freezing point is changing from a liquid to a solid. Both occur at the same temperature & these terms are usually used interchangably, although melting point is probably used more often than freezing point.
How is boiling point and melting point related?
Boiling points and melting points are temperatures at which change of phase occurs to liquids andsolids. Some substances, such as water, have a TRIPLE POINT temperature at which all three phases (solid, liquid, vapor), exist simultaneously.Boiling point of a liquid is the temperature at which its phase changes into vapor and the melting point of a solid is the temperature at which it changes state from solid to liquid. The solid and liquid phase of a substance exist in equilibrium at the melting point. The reverse change from liquid to solid is referred to as the freezing point. The freezing point of a substance is often determined by observing the temperature at which a solid begins to change into a liquid, which is actually the melting point, because a characteristic property of some substances is their ability to supercool.
What effects do fatty acids have on your body?
Fatty acids can have a number of bad effects on the body. They are known to increase cholesterol and improve the changes of contracting heart disease. These fatty acids are often found in foods such as red meats.
What characteristics must a liquid have before it can be used in a thermometer?
One thermometric property that is required is that it must vary linearly with temperature. In liquid-in-glass thermometers, the length of the liquid thread is often used to determine temperature. Thus when temperature increases, the liquid must expand uniformly with temperature, so that it can be used to measure temperature accurately.
Fatty acids containing at least one double or triple covalent bond is called?
These fatty acids are called saturated fats. These are often some of the worst fats for the body.
Glycerol and fatty acids are found in what type molecule?
Unreacted fatty acids are rare in nature, but most fats and oils are triglycerides of fatty acids, and the acids can be recovered by hydrolyzing the triglycerides. This process is sometimes called "saponification" when the hydrolysis is aided by strong alkali, as in that instance the primary products (aside from glycerin) are salts of fatty acids, which are often good soaps.
What is polyunsaturated fat?
It is a fatty acid lipid [Lipids are Oils from Plant sources and Fats from Animal sources] that contains more than one [unsaturating] -C=C- double bond.Saturation, in this instance, refers to the state where all potential Carbon sites of double bond formation are taken by hydrogen atoms.
Is lemonade a gas and a liquid?
Yes. Americans will often refer to the liquid fuel gasoline as "gas" for short, which might be confusing to residents of other countries. It is often known outside the U.S. as "petrol."
Why are large amounts of oxygen often transported as a liquid at low temperature?
The volume is lower and the transport easier.
What is the definition of fat?
The major kinds of fats in the foods we eat are saturated, polyunsaturated,monounsaturated and trans fatty acids. Saturated fats, trans fats and dietary fatsFat can also mean someone who is overweight
Difference between fat and oil?
Fat and oils are similar chemically, but the subtle differences that do exist have major effects on health. Fats and oils both consist of molecules that have 'backbones' of long chains of carbon and hydrogen atoms chemically bonded together. These molecules are called 'fatty acids'. Fats and oils in the diet (and most fat in the body) contain three fatty acids chemically bonded to form one fat molecule. A fatty acid may be 'saturated' with hydrogen (ie, all the carbon atoms along the fatty acid backbone have the maximum possible number of hydrogen atoms attached), 'monunsaturated' (two adjacent carbon atoms have less hydrogen atoms) or 'polyunsaturated' (more than two carbon atoms along the fatty acid backbone have less hydrogen atoms) Fats from other animals (eg pork, chicken) are less saturated than ruminant fat and contain some polyunsaturated fatty acids. Fats from game meat (eg, kangaroo, deer) tend to be lower still in saturated fatty acids and often contain significant quantities of a range of polyunsaturated fatty acids. Fats from fish are generally highly unsaturated and contain a form of polyunsaturated fatty acid known as 'omega-3' - Because butter and margarine both contain some water (about 20%), they provide ~30 kJ per gram. Cream contains even more water, so the energy content of 1mL (~ 1gram) of cream is ~14 kJ. Cooking oils and fats generally contain little or no water, so they provide the full 37 kJ per gram. Although all pure fats provide about the same amount of energy, there is some evidence that the effects of fats on weight gain differ according to their chemical composition. It appears that the degree of saturation influences the amount of weight gained or lost on an otherwise similar diet.
Can the temperature at which a substance melts is the same temperature at which it changes from liquid to solid?
Yes. Melting point is changing from a solid to liquid & freezing point is changing from a liquid to a solid. Both occur at the same temperature & these terms are usually used interchangably, although melting point is probably used more often than freezing point.
What happens to the temperature when a liquid turns to a solid?
When a liquid is cooled, its temperature decreases until it begins to freeze. At this point the temperature stops decreasing, because the energy being removed comes from the phase change from liquid to solid and not from changes in the temperature. Once it is completely frozen, the temperature will begin to drop again.Note that this is only true for pure substances like water. Other substances often freeze over a range of temperatures instead of at a single "freezing point". The freezing of these substances is more complicated.
Is dicarbon dihydride a liquid solid or gas?
This is just a fancy way of saying acetylene which can be a liquid, a solid, or a gas depending on the temperature and pressure it is subjected to. Most often, under STP or RTP, acetylene is a gas.
How is solubility related to temperature?
This relationship is most often observed when dealing with liquid solutions. The solubility of solids and liquids in a liquid solvent tends to improve as the solvent's temperature increases, while the solubility of gases in the same type of solvent generally decreases as its temperature rises.
