How does the make up the planets change as their distance from the sun increase?

As distance from the Sun increases, the composition of planets changes primarily due to temperature variations in the early solar system. Closer to the Sun, the high temperatures favor the formation of rocky planets like Mercury, Venus, Earth, and Mars, which are composed mainly of metals and silicates. In contrast, the outer planets—Jupiter, Saturn, Uranus, and Neptune—are gas giants or ice giants, composed largely of lighter elements and compounds such as hydrogen, helium, and ices (water, ammonia, methane) that can condense at lower temperatures. This gradient creates a distinct division between terrestrial and jovian planets based on their distance from the Sun.