A glow stick contains a glass vial with chemicals. When the glow stick is bent, the vial breaks and the chemicals react to produce a glow. A science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. What conclusion can be drawn based on the observation? Be sure to note the outcome and test variables in the conclusion.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you 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.