Not really, you're thinking of comets,
asteroids are composed of rock, metal, or a combination of both.
The Universe
Solid. They are made of rock.
Actually very cold. It's composed of frozen Hydrogen gas while the white spots are composed of frozen ammonia gas.
the universe is composed of stars, planets, satellites, asteroids, meteoroids, dust, and gas.
Jupiter is primarily composed of gas but may have a solid silicate rock and ice core.
A lump of ice, rock, frozen gas, and dust that orbits the sun is called an asteroid. This can be studied about in Astronomy.
That sounds more like a comet. Meteroids are relatively small rocks. They might have traces of ice or other frozen materials that would be gas at our temperature, but mostly they are just rock, because ice in such small quantities would tend to bleed away into space. Asteroids are much larger, and may often have ice and frozen "gases", but only as a relatively small part of their volume. Comets, on the other hand, are generally ice and frozen gases, with some rock mixed in.
comet
Frozen lumps of gas and rock are known as comets. Comets heat up when passing close to the Sun, leaving a visible tail sometimes able to be seen from Earth.
No. Uranus is a gas giant with a core that is composed of water.
Gas. Jupiter is composed predominantly of hydrogen and helium.
An asteroid is solid. it is composed of rock and/or metal.