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.
â¢ In an electrolytic cell, the direction of current is opposite of that in the galvanic cells. â¢ The reactions in the electrodes are reversed in both types of cells. That is in an electrolytic cell the silver electrode is the anode, and the copper electrode is the cathode.