PHA317 - Pharmaceutics Solid
State of Matter Exam Questions
and Answers 100% Pass
do solids have a definite shape - CORRECT ANSWER-yes
crystalline or amorphous
is the distance between molecules in solids different than in gases or liquids -
CORRECT ANSWER-yes
intermolecular distance is much smaller in solids
what is the most thermodynamic state for solids to be in - CORRECT ANSWER-
in the form of crystals
crystalline solid structure is characterized by - CORRECT ANSWER-the highly
ordered arrangement of molecules (lattice structure)
solids form crystals because they are - CORRECT ANSWER-stable
crystalline solid have molecules that are - CORRECT ANSWER-arranged in a
rigid, ordered, lattice structure
, crystal formation involves two steps - CORRECT ANSWER-nucleation
crystal growth
what is the pre-requisite for the growth and eventual formation of ONE crystal -
CORRECT ANSWER-nucleation
what important factors affect nucleation - CORRECT ANSWER-1. solvents
2. temperature
3. concentration
4. presence of impurities
the impurities in a solution are required - CORRECT ANSWER-to serve as the
base or platform on which nucleation can begin
what step happens after the nucleation stage in crystal formation - CORRECT
ANSWER-crystal growth
crystal habit or crystal shape come in what different dimension - CORRECT
ANSWER-needle or equidimensional (ie. cubic or trigonal)
plate like crystals are easier to inject than - CORRECT ANSWER-needle-like
crystals
equidimensional crystals - CORRECT ANSWER--have better flow properties than
needle form
-compact uniformly with ease
State of Matter Exam Questions
and Answers 100% Pass
do solids have a definite shape - CORRECT ANSWER-yes
crystalline or amorphous
is the distance between molecules in solids different than in gases or liquids -
CORRECT ANSWER-yes
intermolecular distance is much smaller in solids
what is the most thermodynamic state for solids to be in - CORRECT ANSWER-
in the form of crystals
crystalline solid structure is characterized by - CORRECT ANSWER-the highly
ordered arrangement of molecules (lattice structure)
solids form crystals because they are - CORRECT ANSWER-stable
crystalline solid have molecules that are - CORRECT ANSWER-arranged in a
rigid, ordered, lattice structure
, crystal formation involves two steps - CORRECT ANSWER-nucleation
crystal growth
what is the pre-requisite for the growth and eventual formation of ONE crystal -
CORRECT ANSWER-nucleation
what important factors affect nucleation - CORRECT ANSWER-1. solvents
2. temperature
3. concentration
4. presence of impurities
the impurities in a solution are required - CORRECT ANSWER-to serve as the
base or platform on which nucleation can begin
what step happens after the nucleation stage in crystal formation - CORRECT
ANSWER-crystal growth
crystal habit or crystal shape come in what different dimension - CORRECT
ANSWER-needle or equidimensional (ie. cubic or trigonal)
plate like crystals are easier to inject than - CORRECT ANSWER-needle-like
crystals
equidimensional crystals - CORRECT ANSWER--have better flow properties than
needle form
-compact uniformly with ease
