Contents
What is a monomer and a polymer?
Monomers are small molecules, mostly organic, that can join with other similar molecules to form very large molecules, or polymers. Polymers are a class of synthetic substances composed of multiples of simpler units called monomers. Polymers are chains with an unspecified number of monomeric units.
Which monomer is used in ethylene polymer?
Some Common Addition Polymers
| Name(s) | Formula | Monomer |
|---|---|---|
| Polyethylene low density (LDPE) | –(CH2-CH2)n– | ethylene CH2=CH2 |
| Polyethylene high density (HDPE) | –(CH2-CH2)n– | ethylene CH2=CH2 |
| Polypropylene (PP) different grades | –[CH2-CH(CH3)]n– | propylene CH2=CHCH3 |
| Poly(vinyl chloride) (PVC) | –(CH2-CHCl)n– | vinyl chloride CH2=CHCl |
What is the monomer of lipids?
Comparing the Biological Macromolecules
| Macromolecule | Basic Formula, key features | Monomer |
|---|---|---|
| Proteins | CHON −NH2 + −COOH +R group | Amino acids |
| Lipids | C:H:O Greater than 2:1 H:O (carboxyl group) | Fatty acid and glycerol |
| Carbohydrates | C:H:O 1:2:1 | Monosaccharides |
| Nucleic Acids | CHONP pentose, nitrogenous base, phosphate | Nucleotides |
What are the monomers of carbohydrates?
The simplest carbohydrates are called monosaccharides, or simple sugars. They are the building blocks (monomers) for the synthesis of polymers or complex carbohydrates, as will be discussed further in this section. Monosaccharides are classified based on the number of carbons in the molecule.
What are the 4 types of monomers?
Monomers are atoms or small molecules that bond together to form more complex structures such as polymers. There are four main types of monomer, including sugars, amino acids, fatty acids, and nucleotides.
What are the 20 monomers?
20 Monomers of Proteins
| Hydrophobic | Hydrophilic | In between the two forms |
|---|---|---|
| Leucine (Leu) | Glutamic acid (Glu) | Alanine (Ala) |
| Isoleucine (Ile) | Glutamine (Gln) | Serine (Ser) |
| Methionine (Met) | Histidine (His) | Threonine (Thr) |
| Phenylalanine ((Phe) | Lysine (Lys) | Tyrosine (Tyr) |
What is the formula of ethene?
C2H4
Ethylene/Formula
Ethylene, or ethene, is an unsaturated hydrocarbon. It is a colorless gas. Its chemical formula is C2H4 where there is a double bond between the carbons.
What is ethylene monomer?
Monomer: A relatively simple molecule from which a polymer can be made. Ethylene can act as a monomer that polymerises to form polyethylene. The double bond in ethylene breaks open to form single bonds with neighbouring molecules, forming the long saturated polyethylene chain.
What are monomers and polymers of carbohydrates?
The monomers of carbohydrates are the monosaccharide units that are the basic building blocks of all sugars and starches. The polymers of carbohydrates are disaccharides and polysaccharides that consist of two or more monomers respectively. Examples of monosaccharide are: glucose, fructose and galactose.
What are carbohydrate polymers?
A carbohydrate polymer is a string of sugar molecules linked together. Carbohydrates formed by the condensation of 2-9 monomers are called oligosaccharides. The polymers of carbohydrates are glycogen (stored in liver and muscle) in animals.
What is polymer Class 8?
A polymer is a very big molecule formed by the combination of a large number of small molecules. The small molecules which join together to form a polymer is called monomer. The monomer which make a polymer may be of the same compound or of different compounds.
What are lipids polymers?
A lipid is a polymer composed of three fatty acid molecules and one glycerol molecule. Lipids produce a special polymer form which is considered to be a key component of cell membranes and hormones. Fatty acids are lipid monomers formed by a hydrocarbon chain with a carboxyl group attached at the end.