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

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

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

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

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

STD – 6 th SUB – SCIENCE Presented By -Panchal Amol 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 sub0stances. 10.Methods of separating substances

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

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

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