将液体从固体中分开来的最简易方法是什么?过滤在此影片中 将学习如何有效的用重力过露及真空过滤来进行。 The easiest way to separate a liquid from a solid? Filtration! Learn how to effectively carry out gravity and vacuum filtrations in this video

要熟悉流管柱层析法需要适当的练习。此影片将会让从你填充 的适当条件技巧开始、填充及进行管柱层析,甚至用管子做一个微 管柱层析。 It takes considerable practice to master the art of \running a column\. This video will get you started, with tips on picking appropriate conditions, packing and running a column, monitoring separation, and even making a micro-column from a pipet

在本影片中学习如何熟悉滴定技术---用酚?在酸/碱滴定中的详 细示范。 Learn how to master the art of titration in this video-with a detailed demonstration of an acid/base titration using phenolphthalein

不要让不精确在实验室阻碍你!此影片介绍正确方法来使用滴 管、滴定管、量瓶和注射器精确测量液体体积。 Don't let inaccuracy hold you back in lab! This video introduces the proper methods for measuring precise volumes of liquid using pipets, burets, volumetric flasks, and syringes

薄层分析法在许多研究实业室是最常用的此影片将带领你每 步骤,从准备跑瓶到计算RF(retention factor)值 步骤, Thin-layer chromatography is the most commonly used analytical technique in many research labs. This video walks you through every step from setting up a developing chamber to calculating Rf values

使用旋转挥发仪:旋转挥发仪是你在实验室的好朋友。此影片 中将会确定你建立了一个安全并产生关系。 Using the Rotavap: The rotary evaporator is your friend in the lab. This video will ensure that you build a safe and productive relationship

萃取、冲洗和干燥:还没到结束不能算结束。藉由分液漏斗示 。 范液相-液相萃取并学习如何用”反应检查步骤”检查你的反应。这 是一个你不会想错失的一个纯化技巧! Extracting, Washing and Drying: It ain't over 'til it's over. Learn how to \work up\ your reaction using a separatory funnel to perform a liquid-liquid extraction. This is one purification technique you don't want to miss!

从固态到气态,然后直接回到固态。此纯化技巧既漂亮又实用 的。找出此影片中为什么用大气压力来升华二茂铁(Ferrocene) From solid to gas, and then straight back to solid. This purification technique is both beautiful and useful. Find out why by watching the atmospheric pressure sublimation of ferrocene in this video

再结晶须有耐心,但它是值得的!此影片让你用一种溶剂与两种 溶剂的再结晶方法从溶解度测试到冷过滤来经验此过程 Recrystallization takes patience, but it's worth it! This video walks you through the procedure, from solubility tests to cold filtration, with information on one-solvent and two-solvent recrystallizations

一、课程目的 物理化学和胶体化学是研究变化规律性的基础科学,本课程是农业院校主要的基础课程,是生命科学、土壤科学、食品科学、环境科学等专业本科生的必修课程。该课程科学地、系统地、严谨地阐明化学的基本理论,为学生深入学习有关专业课程打下坚实的基础