Fill in the blanks: a substance that undergoes a change will always result in something new that has properties than what it started out as. A- physical and different. b- physical and same. C-chemical and different. D chemical and same

Two liquids are poured into a beaker. after a few seconds, the beaker becomes warm. which of the following best describes this reaction? a. an exothermic reaction b. a decomposition reaction c. an endothermic reaction d. a single-displacement reaction