In the context of alkanes, "saturated" means that every carbon atom in the molecule is bonded to the maximum number of hydrogen atoms possible. Here's why:

* Alkanes: These are hydrocarbons (molecules made of only carbon and hydrogen) where all the carbon-carbon bonds are single bonds.

* Saturation: This refers to the number of hydrogen atoms attached to the carbon skeleton.

* Maximum Hydrogen: Each carbon atom can form four bonds. In an alkane, each carbon forms single bonds with other carbons and the remaining bonds are with hydrogen atoms.

Example:

* Ethane (C2H6): Each carbon atom in ethane is bonded to three hydrogen atoms, which is the maximum number of hydrogen atoms possible for a carbon atom with one other carbon bond.

* Propane (C3H8): Each carbon atom in propane is bonded to a maximum of hydrogen atoms, with the two end carbons having three hydrogen bonds and the middle carbon having two.

Key Points:

* Saturated alkanes are very stable because they have no double or triple bonds.

* They are also relatively unreactive compared to other hydrocarbons.

* The general formula for saturated alkanes is CnH2n+2, where n is the number of carbon atoms.

Let me know if you have any other questions!