Compound is only one type of atom, Matter has mass and takes up space., Physical change can change the substance into new one., Physical change doesn't change the substance., Heterogeneous mixture that can't be separated and it is non- uniform., Filtration to separate two mixed liquids., Molecule has two similar atoms combine with chemical bonds., Compound is two or more atoms combine with each other.,

排行榜

闪存卡是一个开放式模板。它不会为排行榜生成分数。

视觉风格

选项

切换模板

恢复自动保存: