Quiz 21 Flashcards
- In condensation polymerization, the ,most common molecule eliminated is
ammonia
carbon dioxide
methane
water
water
- A superconductor
has zero resistance below some temperature
conducts heat very effectively at room temperature
has high electrical resistance
is unlikely to be a ceramic material
has zero resistance below some temperature
- Which of the following is the most disordered?
gas near the condensation temperature
solid near the melting point
liquid near the freezing point
solid at very low temperature
gas near the condensation temperature
- List the three states of matter in order of increasing molecular disorder?
gas<liquid<solid
gas<solid<liquid
solid<liquid<gas
solid<gas<liquid
solid<liquid<gas
- A polymer used in making films, packaging and bottles.
polyethylene (PET)
polypropylene (PP)
polystyrene (PS)
polyvinyl chloride (PVC)
polyethylene (PET)
- A polymer used in making pipe fittings and clear film for meat packaging.
polyethylene (PET)
polypropylene (PP)
polystyrene (PS)
polyvinyl chloride (PVC)
polyvinyl chloride (PVC)
- Natural rubber is formed from liquid resin derived from the inner bark of the Hevea brasiliensis tree, chemically, it is a polymer of _____.
isoprene
neoprene
isooctane
polyethylene
isoprene
- In some cases substances must be moved from an area of low concentration to one of high concentration. This movement is called _____.
osmosis
hemolysis
diffusion
active transport
active transport
- Reactions occurring in a single event or step is
a consecutive reaction
a non-elementary reaction
a parallel reaction
elementary reaction
elementary reaction
- Energy flows spontaneously from areas of higher temperature to
areas of equilibrium
areas of lower pressure
amounts of lower mass
areas of lower temperature
areas of lower temperature
- The highest temperature at which a substance can exist as liquid is called its
boiling point
melting point
critical temperature
Boyle temperature
critical temperature
- A fossil fuel
is formed from the decomposition of remains of ancient plants and animals
is recycled naturally in the carbon cycle
contains mainly methane
is not an organic compound
is formed from the decomposition of remains of ancient plants and animals
- Aqua regia is a mixture of
HCl & perchloric acid
nitric & HCl
nitric & perchloric acid
HCl, HNO3& perchloric
nitric & HCl
- _______ is the Greek word for “salt forming”.
actinides
halogen
lanthanide
transition
halogen
- Which of the following has no definite structure?
crystalline
amphoteric
amorphous
allotrope
amorphous
