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MATTER, , are pure substance , is a simplest form of pure substance -…

- - - - Element
        
        they are made up of
        only one type of atom
        
        Atom
        
        Example;
        Na, Br, Mg
        
        Molecules
        
        Example;
        O2, Br2, S8
      - Compound
        
        made up of two or
        more different type of atom
        
        Molecules
        
        Example;
        H2O, BCl3, Glucose
        
        Ionic
        
        Example;
        NaCl, MgCl2, NaHCO3
- - - - Homogeneous
        mixture
        
        are disturbed throughout,
        resulting in a uniform composition
        
        Example;
        Salt water, Air,
        Vineger
      - Heterogeneous
        mixture
        
        are not uniformly distributed
        throughout
        
        Example;
        Salad, Sand, Oil
    - - combined physically
      - retain the chemical identity