题目

碳酸氢钠是一种重要的盐类物质，在生活中用途广泛．小滨同学设计了实验，以探究碳酸氢钠的化学性质。 【查阅资料】无色的酚酞试液遇到酸性溶液和中性溶液不变色，遇到碱性的溶液变红色。 实验步骤现象结论 【探究实验1】碳酸氢钠溶液的酸碱性取少量该固体加入试管中，加适量水溶解，再滴入几滴酚酞试液，震荡                 碳酸氢钠溶液显碱性 【探究实验2】碳酸氢钠能否与酸反应取少量该固体加入试管中，滴加稀盐酸固体逐句型转换 1.You can’t arrive late for school. (改为祁使句)         arrive            for school. 2.It’s about 10 kilometers from Beijing to Tianjin.(对划线部分提问)                       Is it from Beijing to Tianjin. 3.He has to get up early in the morning.(对划线部分提问)          does he                               in the morning? 4.Her sister sometimes walks to school.(同义句) Her sister sometimes                  school                     . 5.His father works at a radio station.(变为一般疑问句)            his father             at a radio station?