The Physical and Chemical properties of the

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Presentation transcript:

The Physical and Chemical properties of the

Properties Melting Point Density Electrical Conductivity Appearance

Melting Point / Density Metal Melting Points Density Scandium 1400oC 3g/cm3 Vanadium 1677oC 4.5g/cm3 Titanium 1917oC 6.1g/cm3 Chromium 1903oC 7.2g/cm3 Manganese 1244oC 7.4g/cm3 Iron 1539oC 7.9g/cm3 Cobalt 1495oC 8.9g/cm3 Nickel 1455oC Copper 1083oC Zinc 419oC 7.1g/cm3

Electrical Resistivity Metal Resistivity (10-8m-1) Scandium 10.1 Vanadium 8.6 Titanium 3.8 Chromium 34 Manganese 136 Iron 8.9 Cobalt 5.6 Nickel 6.1 Copper 1.56 Zinc 4.2 Glass 1000000000000000000

Appearance Any thing in common?

That’s right They’re metals HIGH MELTING POINTS HIGH DENSITY HARD and SHINEY ELECTRICAL CONDUCTORS

Compounds of transition elements Appearance Formulae Differences with Group 1 compounds

Transition metal compounds Amino copper sulphate Copper carbonate Copper sulphate Nickel Sulphate, Cobalt Chloride Copper acetate Compounds of Chromium Copper bromide Copper chloride

Compounds of Group 1 metals Sodium Sulphate Sodium chloride Potassium Bromide Potassium Permanganate (KMnO4) Potassium Chromium sulphate (KCr(SO4)2) Sodium carbonate

Form Coloured Compounds All transition metal compounds are coloured All Group 1 metal compounds are white (The ones that are coloured on previous slide contain transition metals too)

Transition metal ions Transition metals can lose different number of electrons Each Transition metal forms ions of different charge Eg V3+, V2+ and Fe3+, Fe2+ and Cu2+, Cu+ Each ion has a different colour. REMEMBER GROUP 1 metals only form +1 ions.

To identify the transition metal ion present Add Sodium hydroxide A different coloured solid (precipitate) forms depending on the ion present If Fe3+ a BROWN ppt of Fe(OH)3 forms If Fe2+ a GREEN ppt of Fe(OH)2 forms If Cu2+ a BLUE ppt of Cu(OH)2 forms

USES FOR TRANSITION ELEMENTS Iron in Haber Process Nickel in hydrogenation of fats Maganese dioxide in decomposition of hydrogen peroxide Platinium/Rhodium in Catalytic Converters Catalysts