All About Chemistry

Ms. Allison's Classroom Less on 2 Before we explore separating techniques we have to be reminded that it is important to take care when doing e xperiments: handling chemicals and so on. Refusal to take care in being careful may not only cau se danger to ones self  but cause danger to your class mates. Assuming you were at the class where we reviewed Safety Rules Try filling this sheet out on your own. If you have difficulty feel free to revise your notes.

Ms.Allison's Classroom Lesson 1 In our everyday lives we often carry out our daily activities without even realizing that we are using scientific techniques.If you've ever forgotten a pot of salt water on the stove - and observed that the water dries out to leave the a white substance (salt) or used a magnet to pick up pins just for the fun of it, you really are observing Separating Techniques. A mixture is a physical combination of different substances which are mixed together but are not chemically combined, believe it or not no matter what the mixture contains it can be separated with right techniques.There are more than ten (10) methods by which we can separate mixtures, Fig.1 below shows concept map of a few.       Fig.1 A Concept Map Showing Some Common Separating Technique  What are the types of separation techniques? Crystallization Filtration Decantation Sublimation Evaporation Simple distillation Fractional distillation Chromatography Centr