Matter can exist in one of three main states: solid, liquid, or gas. Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. ... Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume.

Explanation:

definition. a hydrocarbon is an organic compound made of nothing more than carbons and hydrogens. it is possible for double or triple bonds to form between carbon atoms and even for structures, such as rings, to form. saturated hydrocarbons have as many hydrogen atoms as possible attached to every carbon.

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