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在解条件隐匿的化学试题时,要善于充分而准确地发掘被隐匿的条件,否则解题时无从下手或造成错解．条件隐匿有数字隐匿、反应隐匿、组成隐匿等．一、数字隐匿题试题中无数字,则应设置符合题意的数字,进行计算．例1把锌和硝酸锌的混合物在空气中灼烧至质量不再改变时为止．冷却后称得其质量与原混合物相同,求原混合物中两种成分的质量分数．
When solving a conditional hidden chemical test, be good at fully and accurately discovering hidden conditions, otherwise you will not be able to solve problems or cause misunderstandings. The conditions are concealed by digital concealment, response concealment, composition concealment, etc. 1. If there is no number in the digital hidden question, then the number corresponding to the question should be set and calculated. Example 1 A mixture of zinc and zinc nitrate was burned in air until the mass no longer changed. After cooling it is weighed in the same quality as the original mixture, and the mass fraction of the two components in the original mixture is sought.