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SAI International School
                                                  Subject-Chemistry

                                           Ch-Is Matter around us pure?
                              Topic- Properties and concentration of solutions
                                                    LESSON NOTE


              A solution is a homogeneous mixture of two or more non reacting substances.
              The particles of solute in a solution cannot be seen by the naked eye.
              A solution does not allow beams of light to scatter.
              A solution is stable.
              The solute from a solution cannot be separated by filtration (or mechanically)
              Binary solution: It is a solution which contains only two components


               Dilute and Concentrated solutions
               Dilute solutions: These are the solutions which has a higher percentage of solvent
               than that of solute.

               Concentrated solutions: These are the solutions which contain a higher percentage of
               solute than the solvent.

               Concentration of a solution:
               The concentration of a solution is a measure of the amount of solute that has been
               dissolved in a given amount of solvent or solution.

               Concentration of a solution can be expressed in different ways

               Percentage method: The percentage of solute present in a solution.


               Mass Percent: The concentration of solid-liquid solutions usually expressed in terms of
               mass percent.

               The mass percent of a solution can be defined as the mass of the solute in grams
               present 100 grams of the solution.

                                                                                        
                                                                   =                      
                                                                                           

               Mass of solution= Mass of solute + Mass of solvent

               Thus, Mass percentage can be expressed as

                                                                                        
                                                          =                                        
                                                                              +
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