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UNIT 2.4 STRUCTURE OF METALS AND ALLOYS

Chemistry is the study of matter and interactions.  Chemistry overlaps with many other sciences.

Below is the contents for this sub unit.  This will allow you to jump to any section you desire.

Metallic Bond.jpg

METALLIC BONDING

Metal bonding is represented by positive metal ions in an array and a 'sea of electrons'.  The electrons are delocalized allowing them to move freely.  This is why metal make great conductors for electricity.

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Intersitital Alloy.jpg

INTERSTITIAL ALLOY

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As you can see from the picture above, small atoms can be incorporated into the metal bond array without disrupting the pattern.  This can improve the strength of an alloy or give it other properties.

Substitutional Alloy.jpg

SUBSTITUTIONAL ALLOY

Sbustitutional alloys replaces an atom with a different one.  This again can change the properties of the metal (make it more resistant to rust for example).

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