exam 4 chem
What is a chain of carbon called?
What is an addition polymer?
a polymer created when monomers add on to one another breaking the double bond and the polymer still contains all the atoms of the monomers
What is the difference between low density polyethylene and high-density polyethylene?
HDPE holds its shape better in boiling water
HDPE has fewer side chains branching off
HDPE has a higher density than LDPE
HDPE is less flexible than LDPE
HDPE packs closer together
HDPE are stronger
What does monomer refer to?
What is vulcanization?
when sulfur forms cross-links between polymer chains
What is the main use of elastomers?
How are Nylons named?
according to the number of carbons atoms in each monomer units
What is a condensation polymer?
a polymer created when monomers react and form the byproduct of water and that polymer only has some of the atoms of the monomer
What are crystalline polymers?
when molecules line up neatly to form long fibers of great strength
____ polymers are often elastomers.
What is an elastomer?
a material that returns to its original after being stretched
What are the 4 essential biomolecules?
What is an anabolic reaction?
two or more small molecules synthesize a larger molecule by adding energy
What is a catabolic reaction?
When a large molecule degrades to form smaller molecules thus releasing energy
Why do we need catabolism?
To break down fats, carbs, and proteins we eat into monomers that we can use and energy can be used for the body
What two monosaccharides are combined to create sucrose?
glucose and fructose
What is the structural difference between starch and cellulose?
the way the monomers of glucose connect to each other
exam 4 chem