Ionic and Covalent Bonding

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  • Created by: nom
  • Created on: 12-10-08 13:26

Properties of Ionic Compounds

Usually solids

usually soluble (dissolve in water)

Solids do not conduct electricity

If dissolved do conduct electricity

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properties of covalent bonds

Usually gases / liquids - large giant structures do exist as solids

insoluble - dont mix with water

low melting + boiling points

do not conduct electricity in any stater (except graphite)

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Covalent Bonding

electrons obtain fullouter shells by sharing electrons - no charges involved

ionic bonding occurs between metals+ non metals

covalent bonding - 2 nonmetals join together

2 hydrogen atoms come together + both share the two electrons - both electrons can move around both shells

two shared electrons = one covalent bond

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Hydrogen Chloride

very acidic gas

no charges - does not conduct electricity

dissolved in water makes hydochloric acid - hydrogen ions so conducts electricity

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Giant Covalent Stuctures

solids which contain covalent bonding are called giant structures :-

diamond

graphite

silicon dioxide

fullerene

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