No. While comets contain some rock, they are mostly made of ice.
A comet
It is solid ice and rock. The ice melts as it's coming near the sun though.
A comet is a cloud of dust and an asteroid is a solid rock.
The nucleus is the solid part of a comet.
comet
The center of a comet is called its nucleus.
The tail of a comet is made up of a combination of frozen rock, and ice particles coming off the comet and is lit up by the sun. If you were to be in this tail, you would face: subzero temperatures and constant pummeling by SOLID ice and rock.
The solid object at the head of a comet is called the comet nucleus.
The solid portion of a comet or more accurately, the source for all the gases and dust that make a comet visible to us, is called the nucleus.
We believe comets have a composition like a dirty snowball. They contain alot of ice and dust. The ice does trun into a gas when the comet approaches near to the sun and this causes the comet's tail to form.
Me
simple and easy a comet a comet has a solid center nucleus that contains rock particles trapped in frozen liqud this forms the tail: as it moves closer to the sun the "outer ice" turns to gas and the solid particles (pieces) turn to dust