Unit 3 : Polymers Flashcards

1
Q

a molecule, made from joining together many small molecules called monomers.

A

Polymer

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2
Q

They occur naturally and are found in plants and animals.

A

Natural Polymers

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3
Q

These are man-made polymers.

A

Synthetic Polymers

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4
Q

polymer which consists of one type of monomer

A

Homopolymer

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5
Q

a polymer which is derived from more than one type of monomer.

A

Copolymer

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6
Q

The structure of polymers containing long and straight chains fall into this category.

A

Linear Polymer

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7
Q

When linear chains of a polymer form branches, then, such polymers are categorized as

A

Branched Chain Polymers

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8
Q

They are composed of bifunctional and trifunctional monomers. They have a stronger covalent bond in comparison to other linear polymers. Bakelite and melamine are examples in this category.

A

Cross-linked Polymers

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9
Q

consists of relatively long sequences of identical monomer units

A

Block polymer

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10
Q

branched polymer whose backbone is formed from one type of monomer and branches are formed from other type of monomer

A

Graph Polymer

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11
Q

it is the orientation of monomer units in a polymer molecule with respect to the main chain

A

Tacticity

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12
Q

side groups of the polymer lie on the same side of the chain

A

Isotactic polymer

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13
Q

side groups of the polymer are arranged in an alternate manner

A

Syndiotactic polymer

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14
Q

side groups are arranged in an irregular or random manner around the main chain

A

Atactic polymer

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15
Q

polymers which are easily softened upon heating

A

Thermoplastics

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16
Q

polymers which change irreversibly into hard and rigid materials on heating and cannot be reshaped

A

Thermosets

17
Q

polymers which can be easily stretched by applying small stress

A

Elastomers

18
Q

polymers which have strong intermolecular forces between the polymer chains

19
Q

these polymers are formed when same monomers are added – these monomers are usually alkenes (hydrocarbons that contain double bonds)

A

Addition polymers

20
Q

these polymers are formed when two monomers react with the elimination of smaller molecule (usually water, ammonia, methanol, or hydrogen chloride)

A

Condensation polymers

21
Q

polymer made up of long strands of glucose, which is also called the “polysaccharide”. It is abundantly found in plants which give plants their sturdy structure.

22
Q

another polymer made up of glucose monomer units. Starch is made up by plants for them to store energy. It is a combination of “amylose” and ”amylopectin”.

23
Q

a polymer that is obtained as a milky white fluid known as latex from a tropical rubber tree. It is made up of Isoprene monomer units.

24
Q

Polymer made up of monomer units called “nucleotides”. DNA is found in nearly all living cells.

25
section of the DNA that codes for a protein is called
Genes
26
polymers made up of amino acids bonded together to create a long chain. Proteins make up our hair and muscles.
Protein
27
a kind of protein produced by silkworms to make their cocoon.
Silk
28
a polymer found in trees, together with cellulose, makes trees rigid.
Lignin
29
a polymer which composes the exoskeleton of crustaceans such as crabs and shrimps.
Chitin
30
used in regular glue
Polyvinyl Acetate
31
used in superglue (stronger than PVA)
Ethylcyanoacrylic
32
used to make a biodegradable plastic, also termed as “bioplastic”
Polyactic Acid
33
Most of the polymers around us are made up of a
hydrocarbon backbone
34
The process of combining a large number of small molecules to form a single macromolecule is known as
Polymerization
35
In this process, two different monomers joined to form a polymer.
Copolymerization