Points to study 10 Methods of separating substances

Points to study 10. Methods of separating substances v. Different types of mixtures. v. Methods of separating substances. v. Threshing. v. Winnowing v. Sifting. v. Picking. v. Settling. v. Filtration. v. Sublimation. v. Using the magnetic property. v. Milk powder. v. Have fun with this group competition STD – 6 th Presented By -Panchal Amol SUB – SCIENCE 10. Methods of separating substances

Different types of mixtures 1) *We often eat different types of mixture. e. g. Bhel, nimbupani, tea etc. 2) Air is also mixture of number gases. 3) Mixture – When solid liquid or gaseous substances mixed together we get mixture. 4) Some time we need to separate some constituents of mixture. Presented By -Panchal Amol STD – 6 th SUB – SCIENCE 10. Methods of separating substances

Methods of separating substances *In agriculture field various method uses for separating substances. *Threshing , winnowing and sifting are the methods for separating grains. *Picking is done to remove small stone from rice, dal and grain. STD – 6 th SUB – SCIENCE Presented By -Panchal Amol 10. Methods of separating substance

v. Settling. The process of soil particle collecting at the bottom is called settling. *It may not be possible o remove insoluble substance from a liquid by settling and decantation. in Presented By -Panchal Amol STD – 6 th SUB – SCIENCE 10. Methods of separating substances

v. Filtration. Filter-paper is used by laboratory for separating substances by straining or filtration. * The solid insoluble impurities in a liquid held back on the fiter paper. * The liquid collected after filtration is called the filtrate. Presented By -Panchal Amol STD – 6 th SUB – SCIENCE 10. Methods of separating substances

Sublimation When some solid are heated, they change straight into a gas and not into a liquid first. This is called sublimation. *The sublimation method is used to separate sublimating substances from their mixture. e. g. Iodine, salt ammoniac , camphor, naphthalene, are sublimating sub 0 stances. STD – 6 th SUB – SCIENCE Presented By -Panchal Amol 10. Methods of separating substances

Using the magnetic property Magnet used to separate Magnetic and Non- magnetic substances from mixture. e. g. Nickel, Cobalt and Iron are magnetic substances Presented By -Panchal Amol STD – 6 th SUB – SCIENCE 10. Methods of separating substance

Milk powder q We obtain milk from adding water in milk powder. q This very useful where fresh milk is not available daily. Presented By -Panchal Amol STD – 6 th SUB – SCIENCE 10. Methods of separating substances

Centrifugation Presented By -Panchal Amol STD – 6 th SUB – SCIENCE 10. Methods of separating substances