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4.问:氧化物与含氧化合物有何不同?答:凡是含氧元素的化合物均为舍氧化合物,而判断一种物质是不是氧化物应从三个方面分析:①是否为纯净物,②是否由两种元素组成,③是否含有氧元素。如 Ca(OH)_2、KMnO_4、P_2O_5、MgO 均为含氧化合物,但氧化物只有 P_2O_5、MgO。5.问:炭与碳在书写时,有何区别?答:碳是指碳元素.表示碳元素和由碳元素组成的化合物时用碳;炭指的是具体物质,如木炭、焦炭、
4. Q: What is the difference between oxides and oxygenates? A: All oxygen-containing compounds are oxo compounds, and whether a substance is an oxide should be analyzed from three aspects: 1 whether it is pure, 2 Whether it consists of two elements, 3 whether it contains oxygen. For example, Ca(OH)2, KMnO_4, P_2O_5 and MgO are all oxygen-containing compounds, but the oxides are only P_2O_5 and MgO. 5. Q: What is the difference between charcoal and carbon in writing? A: Carbon refers to carbon. Carbon is used when it refers to carbon and carbon. Carbon refers to specific substances, such as charcoal, coke,