What best explains why you should use transitions when writing an argument? Transitions help engage and interest the reader in the argument’s subject matter. Transitions help clarify the central argument for the reader. Transitions help the reader understand how the ideas in the argument are connected. Transitions make reading an argument smoother and more enjoyable.

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

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.