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Author:
Journal / Book Title:
Year:
Volume:
Issue:
xing cheng hua xue jie ti si lu de yao qiu
Author(s):
ZHAO Xusheng
Pages:
24
-
27
Year:
1989
Issue:
5
Journal:
Teaching and Learning Reference for Middle School Chemistry
Keyword:
解题思路
;
形成化学
;
极性共价键
;
非极性键
;
分子式
;
题意
;
化学方程式
;
金刚石
;
摩尔
;
化学反应
;
Abstract:
<正> 思路是解题的中心,形成化学解题思路的要求是正确无误,符合逻辑,思维宽广,灵活敏捷,条理清楚,层次分明。 1.化学解题思路的正确性解题思路正确,这是最基本的要求,有些学生化学解题思路错误,其主要原因是: (1)忽略关键字词例1.在下述物质中:(?)Br、PH
3
、NaOH、NH
4
Cl、N
2
、CS
2
、KCl、金刚石、硫(?)。①只有非极性键的是
<
sub>。
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