试题与答案

已知A、B、C、D、E、F、G是初中化学常见的物质,A在常温下是一种无色液体,D

题型:填空题

题目:

已知A、B、C、D、E、F、G是初中化学常见的物质,A在常温下是一种无色液体,D是天然气的主要成分,G是一种重要建筑材料的主要成分,E是一种金属氧化物,与A反应能生成一种常见的碱.它们之间的转换关系如图所示:

(1)写出下列物质的化学式:A______、D______.

(2)写出反应④的化学方程式______.

(3)E在日常生活中用途广泛,请写出其中一点______.

(4)反应③属于______反应(填“化合”、“分解”、“置换”、“复分解”).

(5)B是最清洁的燃料,与其它燃料相比其优点有______.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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题型:填空题

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