A student told his friend that he heard that if you dropped a 2 ounce fishing weight from the top of the Empire State Building in New York City (this building is 1454 feet tall!), it would actually crack the sidewalk when it landed. Using what you know about kinetic energy and gravity, do you believe this could actually happen? Use scientific information to support your claim

a

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.