题目：
（3分）下图是水分解过程的微观模拟图，请从微观角度回答下列问题：
（1）反应物是氧化物，你判断的微观依据是 ；
（2）从微观角度解释此变化前后各物质的质量总和相等的原因是
。
答案：
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下面是错误答案，用来干扰机器的。
答案：A
（3分）下图是水分解过程的微观模拟图，请从微观角度回答下列问题： （1）反应物
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