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IONIC BONDING
· TRANSFER OF ELECTRONS
· FROM ONE ATOM TO ANOTHETR
· FORM IONS
· ONLY ELECTRONS IN OUTER SHELL INVOLVED
· BOND = ELECTROSTATIC ATTRACTION BETWEEN POSITIVE AND NEGATIVE IONS
· OCCURS BETWEEN METALS AND NON METALS…read more

Slide 3

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COVALENT BONDING
· ELECTRONS SHARED BETWEEN 2 ATOMS
· BOTH ATOMS COUNT THE SHARED ELECTRONS IN OUTER SHELLS
· OCUURS BETWEEN 2 OR MORE NON-METALS…read more

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PROPERTIES OF IONIC COMPOUNDS
· HAVE HIGH MELTING AND BOILING POINTS
· ALL SOLIDS AT ROOM TEMPEREATURE
· OFTEN SOLUBLE IN WATER
· CONDUCT ELECTRICITY WHEN MOLTON OR IN SOLUTION
· GIANT STRUCTURE HELD TOGETHER BY IONIC BONDS…read more

Slide 5

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PROPERTIES OF COVALENT BONDS
· LOW MELTING AND BOILING POINTS (EXECPT GIANT STRUCTURES)
· MANY ARE GASES AT ROOM TEMPERATURE
· OFTEN INSOLUBLE IN WATER
· ARE SOLUBLE IN HYDROCARBON SOLVENTS
· DON'T CONDUCT ELECTRICITY (EXCEPT GRAPHITE AND SOLUTIONS OF ACIDS AND
ALKALIS)
· STRONG COVALENT BONDS HOLD ATOMS IN THE MOLECULES TOGETHER
· THE MOLECULES ARE HELD TOGETHER BY WEAK BONDS.…read more

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DIAMOMD
· VERY HIGH MELTING AND BOILING POINTS
· DOESN'T CONDUCT ELECTRICITY
· INSOLUBLE
· HARD (HARDEST NATURAL SUBSTANCE)
· USED IN:
· JEWELLERY
· CUTTING, ENGRAVING AND GRINDING TOOLS
· AS AN ABRAHISIVE…read more

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