The chemical formula tells the types of atoms and how many of each are contained in a compound. select the best answer from the choices provided
a. true
b. false

the answer is alpha particles hope i you

b.

the accuracy of the data.

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.