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Chem > Unit 3 : Polymers > Flashcards

Unit 3 : Polymers Flashcards

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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

A

Fibers

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.

A

Cellulose

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”.

A

Starch

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.

A

Rubber

24
Q

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

A

DNA

25
Q

section of the DNA that codes for a protein is called

A

Genes

26
Q

polymers made up of amino acids bonded together to create a long chain. Proteins make up our hair and muscles.

A

Protein

27
Q

a kind of protein produced by silkworms to make their cocoon.

A

Silk

28
Q

a polymer found in trees, together with cellulose, makes trees rigid.

A

Lignin

29
Q

a polymer which composes the exoskeleton of crustaceans such as crabs and shrimps.

A

Chitin

30
Q

used in regular glue

A

Polyvinyl Acetate

31
Q

used in superglue (stronger than PVA)

A

Ethylcyanoacrylic

32
Q

used to make a biodegradable plastic, also termed as
“bioplastic”

A

Polyactic Acid

33
Q

Most of the polymers around us are made up of a

A

hydrocarbon backbone

34
Q

The process of combining a large number of small molecules to form a single macromolecule is known as

A

Polymerization

35
Q

In this process, two different monomers joined to form a polymer.

A

Copolymerization

Chem (11 decks)

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