初三科学：上册第二章活动2碱与盐反应 (pg28)
Quiz by CHEW HOCK LEONG周福隆
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- Q1影片中实验，氯化铜(II)溶液是什么颜色？黄色橙色蓝色红色Video30s
- Q2影片中实验，右边（第一支试管的氯化铜(II)）滴加了氢氧化钠，左边（第二支试管的氯化铜(II)）滴加了氨水。请问氢氧化钠和氨水都是什么？碱酸盐Video30s
- Q3请问当氯化铜(II)溶液滴加了氢氧化钠溶液后，可观察到什么现象？产生黑色沉淀产生絮状蓝色沉淀产生气泡产生红色沉淀30s
- Q4影片中实验，氯化铁(III)溶液是什么颜色？黄色蓝色紫色绿色Video30s
- Q5请问当氯化铁(III)溶液滴加了氢氧化钠溶液后，可观察到什么现象？溶液变无色产生气泡产生白色沉淀产生絮状红褐色沉淀30s