1目录第一章开启化学之门.............................................................................................................................................................................................2第二章身边的化学物质.........................................................................................................................................................................................9一、氧气的性质、用途及制法......................................................................................................................................................................9二、二氧化碳的性质、用途及制法............................................................................................................................................................11三、自然界中的水........................................................................................................................................................................................13第三章物质构成的奥秘.......................................................................................................................................................................................15一、微粒的性质............................................................................................................................................................................................15二、分子与原子............................................................................................................................................................................................16三、元素........................................................................................................................................................................................................18四、物质的组成、构成及分类....................................................................................................................................................................19五、物质的组成的表示：............................................................................................................................................................................19第四章认识化学变化...........................................................................................................................................................................................20第五章—金属的冶炼与利用................................................................................................................................................................................25第六章《溶液》知识点.........................................................................................................................................................................................27一、溶液的形成............................................................................................................................................................................................27二、溶解度....................................................................................................................................................................................................29三、溶质的质量分数..........................................................................