Polyunsaturated compounds or the polyunsaturated fatty acids are the type of unsaturated fatty acids containing two or more than two carbon-carbon double bonds.
They can be classified into three groups on the basis of their chemical structure:
1. Methylene-interrupted polyenes: contain more than one cis double bonds which are separated by a methylene group. <u>Example: Linoleic acid</u>
2. Conjugated fatty acids: contain at least one double pair which is separated by a single bond. <u>Example: Punicic acid</u>
3. Other polyunsaturated fatty acids.<u> Example: Pinolenic acid</u>
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Since the speed in which the gas molecules are faster as they are heated, they fly around in the container and logically, it is harder to insert a moving object into water than something more stationary or slower.
