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Aluminum

Metallic Bonding

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AluminumDuring metallic

bonding the valence electrons become delocalized.

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Sea of Electron Model

Metallic Bonding is the result of

delocalized valence electrons and the

electrostatic force.

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Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron Model

Sea of Electron ModelExplains the properties of metals:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are ductileMetals have high melting points

Tightly bound cations are surrounded by a sea of negative delocalized electrons.

There is a very strong electrostatic force holding metals together.

Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

Metals conduct thermal energy (heat) quite well because the delocalized electrons are capable of transferring kinetic energy very easily.

Also, the close packing of metal atoms allows them to transfer vibrational energy between one another much more efficiently.

Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

Science Experiment!

Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

Electricity is the flow of electrons. Delocalized electrons that are already freely moving are capable of conducting electricity very well.

Electrons usually move randomly but when connected to a battery electrons in a metal will stream towards the positive end.

Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

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Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

Malleable: capable of being pounded into thin sheets.

Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

DUCTILE: capable of being stretched into thin wire.

Sea of Electron ModelExplains the properties of metal:

Metals are good conductors--Heat--Electricity

Metals are malleableMetals are DuctileMetals have high melting points

Metals: transfer thermal energy well and are tightly held together by electrostatic forces and resist melting.

ASSIGNMENT[1]What is an alloy, why are they useful? List three practical alloys and explain their application.[2] What metal is a liquid at room temperature and why?[3] Explain the disappearing spoon trick in chemistry.[4] In you own words, what is metallic bonding and how does it explain the properties of metals?