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Classification of the Elements (Metals (They are found in the left, center…

- - - - Malleable, ductile, and tough
        Brittle and metallic look
        Good heat and electricity conductors
        Insoluble in nearly every solvent
        Most of them are solids
    - - They lose electrons during the oxidation chemical changes.
        They react with oxygen and form oxides.
        Oxides react with water to form hydroxides (alkaline pH)
        They react with nitric acid forming the corresponding oxisal
- - - - Non-malleable and ductile, conduction, luster, conductivity, melting and boiling points
    - - Non-metals have tendency to gain or share electrons with other atoms, when they react with metals, they tend ti gain electrons, compounds composed completely by nonmetals are molecular substances, they generally form acid or neutral oxides with oxygen that dissolve in water react to form acids