When vinegar and baking soda react, the mixture becomes cold to the touch and a gas and a new liquid substance are formed.

which best describes what is occurring in the reaction?

a: the reaction is chemical and endothermic.
b: the reaction is chemical and exothermic.
c: the reaction is non-chemical and endothermic.
d: the reaction is non-chemical and exothermic.

Bradley was working in the lab. he accidentally poured a container of concentrated hydrochloric acid into his container of distilled water. not thinking much of it, he continued with his work as if nothing happened. which of these would be the result of this laboratory accident? a) the water will change to a bright pink color. b) the new solution would decrease in temperature. c) the solution has now become a good conductor of electricity. d) hcl and water have the same chemical and physical properties, so nothing would happen.