关于催化剂的说法正确的是_刷题宝

题干

关于催化剂的说法正确的是（）

A：催化剂只能加快化学反应速率

B：催化剂在化学反应前后其质量和化学性质不变

C：能使任何物质间都发生化学反应

D：二氧化锰可作任一反应的催化剂

上一题下一题 0.0难度选择题更新时间:2018-06-10 02:39:00

答案(点此获取答案解析）

B

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