A balanced equation has . the same number of each kind of atom on both sides of the equation the same number of reactants as products an equal number of molecules on both sides of the equation the same total number of coefficients on both sides of the equation

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

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.