2. Aluminum reacts with warm dilute hydrochloric acid to give aluminum chloride solution and hydrogen. Explain why the reaction of dilute hydrochloric acid with
aluminum foil is fairly slow whereas the reaction with the same mass of aluminum
powder can be extremely vigorous.

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms