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此概念图以 IHMC CmapTools 创建, 内含信息有关于: Chemistry, matter creates elements, atoms formed by molecules, molecules is the smallest unit, molecules can's be divided, Chemisty include periodic trend, matter creates compunds, Chemisty study for matter, atoms is used to create compunds, Chemisty include Bond types, compunds have 2 or more than 2 type of atoms, atoms is used to create elements, elements have 1 type of atoms, atoms can be divided, periodic trend is regular vibration change across periods