Question 1
A piece of zinc placed in hydrochloric acid results in a fierce effervescence and the zinc eventually dissolves, yielding a solution of zinc chloride. A glowing splint gives a "popping" sound, indicating the presence of hydrogen gas. What type of reaction is it?
◦ Decomposition
◦ Single displacement
◦ Combination
◦ Double displacement
Question 2
A solution of sodium chloride when added to a solution of silver nitrate produces a white precipitate of silver chloride. What type of reaction is it?
◦ Decomposition
◦ Single displacement
◦ Combination
◦ Double displacement