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IS MATTER AROUND US PURE, CHANGES, COLLOID, SOLN, SUSPENSION, TYNDALL…

- - - - 1:8
        
        (PROPORTION BY MASS)
- - - - ELEMENTS REACT TO FORM COMPOUNDS
    - - CHEMICAL CHANGE
- - - - DUCTILE
        
        SONOROUS
        
        LUSTURE
        
        CONDUCTIVE
        
        LOW DENSITY AND TENSILE STRENGTH , HARD
- - - - GERMANIUM ,BORON , SILICON
- - - - NOT CONDUCTIVE
        
        NOT SONOROUS
        
        NON LUSTUROUS
        
        SOFT , LOW DENSITY AND TENSILE STRENGHTH