Which of the following indicates that an exothermic reaction has taken place?

A. a change in color
B. release of heat and/or light energy
C. cooling of the surroundings
D. absorption of heat by the reaction

The answer is B. Hope it helps,

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…