Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 302
ttachedare called the poles of the cell, the external portion ofthe negative plate being the positive pole, and that ofthe positive plate the negative pole When the poles are joined by a conductor (Fig. 239),the cell is said to be on a closed circuit; when they arenot (Fig. 238), it is on an open… … 294 PHYSICAL SCIENCE. 1. What change takes place in the appearance of the surfaceof the zinc in the acid ? 2. What is the gas given off? (See High School Chemistry,Revised Edition, page 28.) Place the copper strip also in the dilute acid and holdit parallel with the zinc and near it, but not…
Physics
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