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进入初三,同学们将要学习一门新的课程——化学.如何在短时间内收到较好的学习效果,这一定是大家十分关心的.笔者认为,掌握好的学习方法是其中的重要因素之一.现介绍一些学习化学的方法,希望能起到抛砖引玉的作用.方便口诀法这种方法读起来朗朗上口,简洁明快,新颖独特.不仅易学易懂,而且记忆方便.如常见元素的化合价可编成口诀:一价钾钠氯氢银,二价氧钙钡镁锌,二、三铁,二、四氮最常见.
Into the third day, students will have to learn a new course - how to receive good learning results in a short period of time, which must be of great concern to everyone.In my opinion, to master a good learning method is one of the important One of the factors is now to introduce some learning chemistry, hoping to play a valuable role in promoting Convenient mnemonics This method read catchy, simple and neat, novel and unique. Not only easy to learn and easy to remember, such as common elements The valence can be compiled into formulas: monovalent potassium sodium chloride hydrogen silver, magnesium divalent calcium barium magnesium zinc, two, three iron, two, four nitrogen most common.