Hydrochloric acid is added to a beaker containing a piece of zinc. Zinc chloride is formed and hydrogen gas is released. This is an example of:
A. a chemical reaction
B. a physical change
C. Crystallization
D. None of these
Answer:A
Hydrochloric acid is added to a beaker containing a piece of zinc. Zinc chloride is formed and hydrogen gas is released. This is an example of:
A. a chemical reaction B. a physical change C. Crystallization D. None of these