Pick one or more of the following combinations to investigate in this activity.
vinegar and baking soda (nahco3)
room temperature water and powdered washing soda (na2co3)
vinegar and table salt (nacl)
what chemical combination did you investigate?
did the observed temperature of the solution increase or decrease?
based on your observation, was the reaction endothermic or exothermic? explain your answer using complete sentences.
describe in detail the relationship between chemical bonds and energy. what must be true of the bonds for a reaction to be endothermic and what must be true for the reaction to be exothermic?