Aplate of the steel hull of a ship develops a large crack when the ship strikes a reef. analysis of the steel’s composition shows higher-than-normal levels of an element that could explain why the plate cracked instead of bending. which element is most likely suspected? iron sulfur chromium nickel

Answer : Sulfur

Explanation : When a plate of the steel hull of a ship develops a large crack when the ship strikes a reef.

After the Analysis of the steel’s composition some of the components, showed higher-than-normal levels of an element, We could explain why the plate cracked instead of bending. 

The component was Sulfur, as it the only element which has got much lower melting point as compared to the other metals present in the hull, also it has low hardness than others.

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.