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physical chemistry > 3.1.3.4 Bonding and physical properties- Conductivity > Flashcards

3.1.3.4 Bonding and physical properties- Conductivity Flashcards

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1
Q

the electrical conductivity of solid sodium metal compared with that of solid sodium chloride

A

Sodium conducts and sodium chloride does NOT conduct
(Delocalised) electrons flow though the metal
Allow e– move/carry current/are charge carriers/transfer charge.
Ions can’t move in solid salt

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2
Q

how the bonding and structure lead to the typical metallic property of electrical conductivity

A

electrons are mobile / can move

electrons / carry charge / care charge carriers / move in same direction

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3
Q

Reason why aluminium is a better conductor of electricity than magnesium

A

more electrons delocalised / more outer shell electrons

in aluminium compared with magnesium / reference to Al3+ and Mg2+

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4
Q

how the bonding and structure lead to the typical metallic property of electrical conductivity

A

electrons are mobile / can move

electrons / carry charge / care charge carriers / move in same direction

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5
Q

Reason why aluminium is a better conductor of electricity than magnesium

A

more electrons delocalised / more outer shell electrons

in aluminium compared with magnesium / reference to Al3+ and Mg2+

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6
Q

Why graphite is a good conductor of electricity

A

delocalised (OR free or sea of or mobile) electrons

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7
Q

why silicon dioxide does not conduct electricity when molten

A

No delocalised electrons / no free ions / no free charged particles

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8
Q

why graphane does not conduct electricity

A

No delocalised / free / mobile electrons

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9
Q

why graphene is an excellent conductor of electricity

A

Delocalised electrons / free electrons

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10
Q

why iodine is a very poor conductor of electricity

A

Does not have delocalised/free electrons

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11
Q

Why graphite is a good conductor of electricity

A

delocalised (OR free or sea of or mobile) electrons

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12
Q

the electrical conductivity of solid sodium metal compared with that of solid sodium chloride

A

Comparison: Sodium conducts and sodium chloride does NOT conduct
Explanation: (Delocalised) electrons flow though the metal
Allow e– move/carry current/are charge carriers/transfer charge.
Ions can’t move in solid salt

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physical chemistry (18 decks)

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