Only if they have to sit too long.
Not really, you're thinking of comets, asteroids are composed of rock, metal, or a combination of both.
Jupiter has an effect on the orbits of the asteroids, but I wouldn't really say that's what holds them in the area beyond Mars.
Not really, though some very large asteroids are referred to as planetoids.
Comets are Comets and Asteroids are Asteroids
Asteroids can vary widely in size, with diameters ranging from a few meters to several hundred kilometers. The largest known asteroid, Ceres, has a diameter of about 940 kilometers, while smaller asteroids may only be a few meters across.
the asteroids crashed in Asia have 1000 asteroids
No asteroids have atmospheres.
meteoroids
Stars are tremendously larger than asteroids and do not become asteroids.
The Sun's gravitational pull can influence the orbit and trajectory of asteroids in the solar system. Solar radiation and heat can also cause asteroids to shift in position and potentially break apart or change composition. Additionally, the Sun's energy can contribute to the process of outgassing on asteroids, where volatile substances are released due to solar heating.
asteroids belt
You can see asteroids in the sky.