In ionic bonding,atoms LOSE OR GAIN ELECTRONS to form CHARGED PARTICLES (called IONS) which are then STRONGLY ATTRACTED to one another (because of the attraction of oppsosite charges + and -)
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What are POSITIVE ions?
An atom becomes a POSITIVE ION when it LOSES an electron.
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What are NEGATIVE ions?
Ant atom becomes a NEGATIVE ION when it GAINS an electron.
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What is the structure of an IONIC COMPOUND?
IONIC COMPOUNDS always have GIANT IONIC LATTICE. The ions form a closely packed REGULAR LATTICE arrangment.There are very strong ELECTROSTATIC FORCES OF ATTRACTION between OPPOSITLEY CHARGED ions.
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What do IONIC COMPOUNDS have in common?
They all have HIGH MELTING POINTS and HIGH BOILING POINTS due to the STRONG ATTRACTION between these ions. Takes a LARGE amount of ENERGY to overcome this attraction.
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What happens when IONIC COMPOUNDS melt?
When IONIC COMPOUNDS melt, the ions are FREE TO MOVE and they'll CARRY ELECTRIC CURRENT.
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What happens to IONIC COMPOUNDS in WATER?
Ionic compounds DISSOLVE EASILY in WATER. The ions SEPERATE and are all FREE TO MOVE and they'll carry electric currents.
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Metals....
..LOSE electrons to form NEGATIVE IONS.
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Non-metals...
..GAIN electrons to form NEGATIVE IONS.
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What is the overall charge of ANY COMPOUND?
Zero
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How do you work out the formula of any compound?
All the NEGATIVE charges in a compound must BALANCE all the POSITITVE charges.
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Other cards in this set
Card 2
Front
What are POSITIVE ions?
Back
An atom becomes a POSITIVE ION when it LOSES an electron.
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