一.判断电极属性[例1]铜片和锌片用导线连接后插入稀硫酸中,锌片是____。A.阴极; B.正极; C.阳极; D.负极。[解析]电解池的两极分别命名为阴、阳极;而原电池的两极分别命名为正、负极。铜片和锌片用导线连接后插入稀硫酸中形成原电池,其中活泼的金属锌作负极,因此应选D。 I. Judging the electrode properties [Example 1] The copper pieces and the zinc pieces are inserted into dilute sulfuric acid after being connected with the wires, and the zinc pieces are ____. A. cathode; B. cathode; C. anode; D. anode. [Analysis] The two poles of the electrolytic cell are named as cathode and anode, respectively, and the two poles of the primary battery are named positive and negative electrodes, respectively. The copper sheet and the zinc sheet are connected by wires and inserted into dilute sulfuric acid to form a primary battery. The active metal zinc is used as a negative electrode, so D should be selected.