A student observes that when a solution of nitric acid is mixed with a solution of sodium carbonate in a beaker, bubbles form and the beaker feels warm. Which of the following statements best describes this reaction?
A.
The reaction between an acid and a base forms a precipitate.
B.
Gas formation is evidence of a chemical reaction.
C.
The molecular arrangement of the reactants does not change after the reaction.
D.
The reaction between nitric acid and sodium carbonate is endothermic by nature.
1 answer
B. Gas formation is evidence of a chemical reaction.