2018年中考化学真题分类汇编2我们身边的物质考点14酸碱盐和氧化物6化学反应相关实验分析(无答案).doc

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1酸碱盐和氧化物(18 成都)17.(8 分)根据实验回答:(1)图 1 实验,用药匙的柄把端挑起一点氢氧化钙粉末于试管中,依次进行实验。观察到现象为:浑浊 变红 红色消失。根据现象判断氢氧化钙的性质有 、 (物理和化学性质,各填一条)(2)按图 1 实验完毕,所得溶液中除酚酞外一定有的溶质是 ,可能有的溶质是 。(3)图 2 装置气密性良好。取 0.5g 碳酸氢钠于甲中,加入 2mL 盐酸, (填操作),并将导管伸入澄清石灰水中,观察到出现浑浊。乙中反应的化学方程式为 。2(4)图 2 中甲作为发生装置还可制得的气体是 (填一种)

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