Which of the following is not true of an acid and a base? A. An acid typically contains hydrogen; a base typically contains a hydroxide group (OH–).
B. An acid donates hydrogen ions (H+); a base receives hydrogen ions.
C. An acid ionizes to yield hydronium ions (H3O+) in aqueous solution; a base ionizes to yield hydroxide ions (OH–) in aqueous solution.
D. An acid ionizes in water to yield a positive cation and a negative anion; a base dissolves in water without ionizing.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.