Final answer:
Hydrocarbons with the same formula can have different structures, leading to differences in physical and chemical properties.
Step-by-step explanation:
Hydrocarbons with the same formula can have different structures. For example, one hydrocarbon can have a double bond, while another hydrocarbon can have a ring structure. One hydrocarbon may be longer than the other, and one may be branched. Isomers of hydrocarbons have the same molecular formula but differ in their structural arrangement. These differences in structure can result in different physical and chemical properties.