Here's why:
* Alkane: Alkanes are hydrocarbons (molecules made of only hydrogen and carbon) with single bonds between all carbon atoms.
* Three Carbon Atoms: The prefix "prop-" indicates three carbon atoms in a molecule's name.
* Formula: Propane's chemical formula is C3H8, which means it has three carbon atoms and eight hydrogen atoms.
Let me know if you'd like to know more about alkanes or other types of organic molecules!