* Alkanes: These are hydrocarbons (compounds made of only carbon and hydrogen) with only single bonds. Examples include methane (CH4), ethane (C2H6), and propane (C3H8).
* Alkanes with functional groups: Even when alkanes have functional groups attached, they can still have only single bonds in the carbon backbone. For example, ethanol (CH3CH2OH) has a hydroxyl group, but the carbon-carbon and carbon-hydrogen bonds are all single bonds.
* Saturated fats: These are fats that have only single bonds in their fatty acid chains. Examples include butter and lard.
It's important to remember that the presence of single bonds in a molecule is not the only defining characteristic of an organic compound. Other factors, such as the presence of functional groups and the arrangement of atoms, also contribute to the properties and behavior of a molecule.
