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Chemistry > Materials Revolution > Flashcards

Materials Revolution Flashcards

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1
Q

Amino group

A

NH2

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2
Q

Ammonia =

A

NH3

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3
Q

Three main amine properties -

A

Bases, nucleophile and Ligands

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4
Q

Naming amines
CH3NH2 =
C6H5NH2 =
CH3CH2CH2NH2

A

Methyl amine
Phenyl amine
Propyl amine

Long chained amines can be ‘amino’‘pentane’ for eg

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5
Q

Aryl group =

A

Benzene with H substituted

Eg C6H5 phenyl

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6
Q

Nucleophile

A

Electron pair donor

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7
Q

Primary amines + halogenoalkanes

A

secondary amines (alkylation reaction)

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8
Q

Amines + acyl chlorides

A

Acyl action reaction = secondary amide

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9
Q

Primary amide

A

R- C=O

- NH2

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10
Q

Secondary amide

A

R’- C=O

    - N-H
       - R
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11
Q

Hydrolysis of amides

A

C-N bond breaks
Acid = Carboxylic acid and a substituted ammonium ion

Alkaline = amine and carboxylate anion

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12
Q

Polyesters - condensation reaction between

A

Diols and diCarboxylic acids

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13
Q

Polyamides condensation reaction between

A

Diamines and diCarboxylic acids

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14
Q

Crystalline regions

A

Highly ordered chains

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15
Q

Amorphous regions

A

Randomly arranged chains

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16
Q

Intermolecular bonds for nylon

A

Hydrogen bonding

17
Q

Polyester chains intermolecular bonds

A

Pd-pd

18
Q

Ways to modify polymers

A

Coldrawing- aligns chains
Copolymerisation - introducing monomers with large side groups (lowers Tg)
Plasticizers - molecules sit between chains. Also lowers Tg

19
Q

Alternatives to burial of plastics

A

Recycling - re moulding (if copolymer)
Cracking back to Original monomer
Degradable plastics - bio polymers, biodegradable plastics. Photodegradable

Burn to release energy

20
Q

Producing metal how to reduce CO2

A

Use scrap as raw

21
Q

Life cycle assessment for carbon emissions is known as

A

Cradle-to-grave

Chemistry (13 decks)

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