Chem. Ch. 7 & 9
In the famous equation E = mc2, the symbols represent: E = Einstein, m = matter, c = speed of light E = energy, m = matter, c = characteristic of the particle E = Einstein, m = meters, c = conversion E = energy, m = mass, c = speed of light
E= energy, m = mass, c = speed of light
How are HDPE and LDPE different? Only one is a member of the "Big Six" They are made from different monomers One has branched chains while one is linear One is made by addition polymerization, one by condensation
One has branched chains while one is linear
Which would be classified as a "synthetic" polymer? cellulose wool rubber PVC
PVC
A monomer is: a single polymer chain a polymer made from only one component a small molecule used to make a polymer chain a polymer molecule that only contains a single element
a small molecule used to make a polymer chain
What type of radiation is given off in the nuclear reaction? 210 84 Po --> 206 82 Pb + ________ alpha beta gamma neutron
alpha
Which naturally occurring radioactive particles are the largest? alpha particles beta particles gamma radiation neutrons
alpha particles
Which naturally occurring radioactive particles are negatively charged? alpha particles beta particles gamma radiation neutrons
beta particles
The "Big Six" polymers are all classified as thermoplastics because they are all used as insulators can be melted and shaped are all crystalline are all amorphous
can be melted and shaped
A polymer that is made from two different monomers is known as a dimer dipolymer copolymer multimer
copolymer
Polystyrene is used to make foam coffee cups and CD cases garbage bags and CDs shoes and garden hoses cell phones and contact lenses
foam coffee cups and CD cases
Which example is both type of nuclear radiation and electromagnetic radiation? microwave radiation gamma radiation alpha rays ultraviolet radiation
gamma radiation
Polystyrene is used to make Styrofoam cups. For this usage, which property is most important? good insulator light weight white and opaque brittle
good insulator
What do the letters HDPE represent? high definition polyethylene high density polyethylene high durable polyethylene high ductile polyethylene
high density polyethylene
A polymer is a large molecule made up of long chains of atoms held together by hydrogen bonds made up of long chains of atoms covalently bonded together made up of large lattice structure held together by ionic bonds always made up of identical monomer units
made up of long chains of atoms covalently bonded together
Polyvinyl chloride (PVC) is used in water bottles CD cases milk cartons plumbing pipe
plumbing pipe
Fission is the process of creating energy by combining small nuclei to form a larger, more stable nucleus combining small nuclei to form a larger, less stable nucleus splitting large nuclei with bombarding protons splitting large nuclei with bombarding neutrons
splitting large nuclei with bombarding neutrons
Which would be classified as "natural" polymer? wool polystyrene polyester nylon
wool
