Is this a halogen ester or a hydrocarbon?

yes

Explanation:

We have already seen two functional groups: the C–C double bond and the C–C triple bond. ... The presence of a halogen atom (F, Cl, Br, or I; X is used to represent any halogen atom) is one of the simplest functional groups. Organic compounds that contain a halogen atom are called alkyl halides.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.