4.1.3 Alkenes Flashcards

1
Q

unsaturated definition

A

at least 1 carbon to carbon double or triple bond

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2
Q

hydrocarbon definition

A

compound containing hydrogen and carbon only

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3
Q

general formulae of alkene

A

CnH2n+2

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4
Q

how to obtain an alkene

A

cracking long chained alkanes present in crude oil

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5
Q

How to name an alkene

A

count longest carbo chain
identify position of double bond
use lowest number
name any alkyl groups

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6
Q

Structural isomer

A

compound with the same molecular formulae but different structural formulae

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7
Q

electrophile

A

species that accepts a pair of electrons

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8
Q

what charge does an electrophile have

A

positive

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9
Q

what electrons are most likely to be attracted by the electrophile

A

the electrons on the Pi bond

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10
Q

how to do addition polymerisation

A

remove double bond and extend the end lines

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11
Q

how to join many alkenes

A

break the pi bond

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12
Q

Sterioisomers

A

same structural and molecular formulae but different arrangement of atoms in space

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13
Q

conditions for E/Z isomers

A

a c=c double bond
different groups attached to each carbon atom of the double bond

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14
Q

z isomer

A

on the same side

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15
Q

e isomer

A

on different side

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16
Q

cis isomer

A

same atoms on the same side of the molecule

17
Q

trans isomer

A

same atoms diagonally opposite each other