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Author:
Journal / Book Title:
Year:
Volume:
Issue:
zhua guan jian qiao jie wu shu ju ti
Author(s):
LIU Yibin
Pages:
38
-
40
Year:
2012
Issue:
12
Journal:
Assist and Guide for Junior Middle School Students
Keyword:
解决问题的能力
;
巧解
;
无数据计算题
;
考查分析
;
化学反应
;
等量关系
;
已知条件
;
技巧性
;
Abstract:
无数据计算题是一种特殊的题型,具有一定的技巧性。此类题目主要考查分析问题、挖掘隐含数据的能力,以及应用知识、解决问题的能力。此类题目都隐含着一个已知量——物质的式量。解题时,要认真审题,理解题意,明确其中发生的化学反应,找出问题的所在,利用已知条件从中找出有关物质的等量关系(这是解题关键)。然后根据题意,求出未知量。
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