Saturated compounds and unsaturated compounds (饱和化合物和不饱和化合物) 1) Generally speaking, compounds such as the alkanes whose molecules contain only single bonds are referred to as saturated compounds 2) Compounds with multiple bonds, such as alkenes alkynes and aromatic hydrocarbons are called unsaturated compoundsSaturated compounds and unsaturated compounds (饱和化合物和不饱和化合物） 1) Generally speaking, compounds such as the alkanes, whose Molecules contain only single bonds are referred to as saturated compounds 2) Compounds with multiple bonds, such as alkenes, alkynes, and aromatic hydrocarbons are called unsaturated compounds