Do not count mispronunciations of difficult proper nouns in the oral reading pas-. sages as errors. You may pronounce these for the children if necessary. Also, do not. count as errors dialectical equivalents (nonstandard dialects); however, these should. be noted.
A galvanic cell is also called a voltaic cell. The spontaneous reactions in it provide the electric energy or current. Two half cells can be put together to form an electrolytic cell, which is used for electrolysis. In this case, electric energy is used to force nonsponaneous chemical reactions.
Electrolysis is a electrochemical (redox) reaction brought about by the application of a direct current. Electrolytic cells use an external source of direct current (DC) to drive reactions that would not otherwise be spontaneous. Electrolytic cells do not produce a cell potential but require a potential to operate.