No, that's not true. The giant planets are made up mainly of hydrogen, which is much scarcer on Earth.
because there outer planets
No, the chemical composition is still the same.
No
They have the same chemical composition of H2O.
No. It varies but most are same.
The composition of pure substances, such as elements and compounds, are always the same. The composition of mixtures can vary.
I dont know! Haha
donkeys.
Isomers are pairs of molecules that share the same chemical formula but have different structural arrangements. For example, glucose and fructose both have the chemical formula C6H12O6, but they have different structural arrangements.
The chemical composition of water remain constant.
The planets in our Solar System probably have approximately the same age.
meteorites are considered leftovers from the solar system's formation. Since scientists think planets and meteorites were made at the same time and in the same place, it seems logical that whatever a meteorite is made of is also what planets are made of.