How does the composition of a comet compare with that of the Sun? Both objects are composed of gas. Both objects contain a form of water. Comets are made of ice and dust, while the Sun is made of gas. Comets are made of frozen rock, while the Sun is made of burning rock.

Hello and you very well arow nout

Explanation:

Both shel and

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

the answer is symmetrical : )