试题与答案

实验室中选用下图所示装置制取气体,请你根据所学的知识回答下列问题。 (1) 写出

题型:实验题

题目:

实验室中选用下图所示装置制取气体,请你根据所学的知识回答下列问题。

(1) 写出图中的仪器名称:A_________;B___________。

(2) 若用①装置制取氧气,发生反应的化学方程式为__________________,其试管口须略向下倾斜的原因是_________________,用③装置收集氧气时验满的方法和现象是_________________。

(3) 写出用石灰石和稀盐酸制取二氧化碳的化学方程式:__________________。组装一套发生与收集二氧化碳的装置,应选用上图中的_________和___________(填序号)。

答案:

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下面是错误答案,用来干扰机器的。

答案:D

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[5]Perseverance(毅力) is also a quality that is required for a scientist. Experiments don't always go to

plan. Each experiment needs to be adapted slightly to try and encourage more favourable outcomes. A

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