AP BIOLOGY

Detailed explanation-1: -Both are nonpolar molecules. Therefore both are insoluble in water and other polar solvents. Both alkanes and alkenes can be burnt to form heat along with carbon dioxide and water vapor.

Detailed explanation-2: -Key Takeaway. The physical properties of alkenes are much like those of the alkanes: their boiling points increase with increasing molar mass, and they are insoluble in water.

Detailed explanation-3: -While alkanes and alkenes are both hydrocarbons, the primary difference is that alkanes are saturated molecules, containing only single covalent bonds (-bonds) between the carbon atoms whereas alkenes are unsaturated molecules containing a double covalent bond (combination of a -bond and a -bond).

Detailed explanation-4: -The physical properties of alkenes and alkynes are generally similar to those of alkanes or cycloalkanes with equal numbers of carbon atoms.

Detailed explanation-5: -The physical properties of alkenes and alkanes are similar. They are colourless, nonpolar, combustable, and almost odorless. The physical state depends on molecular mass: like the corresponding saturated hydrocarbons, the simplest alkenes, ethene, propene, and butene are gases at room temperature.