Creighton PHA 317 Pharmaceutics Question with
Verified Correct Answers
Matter is
anything that has weight and occupies space
The Three Fundamental Dimensions
length (cm), mass (g) and time (s)
4 derived dimensions
density and specific gravity
force
pressure
work,enerhy, heat
density=
mass/volume
specific gravity=
density of substance/density of water.
force=
mass x acceleration (cm/s^2)
The weight of a body is equal to
force exerted on that body due to gravity
The weight of a substance with a mass of 1 g is
1 g x 981 cm/sec2 = 981 g cm/sec2, or 981 dynes
,Pressure is
force applied per unit area (g / (cm sec2).
work=
force X distance
expressed in Joules
energy is
the capacity to do work
matter consists of
elements and compounds
How are elements different from compounds
elements are made up of a single element. Compounds are made of two or more elements.
smallest unit of of an element is an atom.compounds is elements composed of atoms
Three fundamental units of an atom
protons, neutrons and electrons
Describe the bohr theory of atomic structure
atoms have nucleus that contain neutral neutrons positive protons and electrons orbit the
nucleus in well defined orbits designated by their quantum numbers
List the 2 main theories that describe molecular structure and state the differences
between them
, valence bond theory and molecular orbit theory. valence bond theory- molecules consist of
individual atons bound together due to unpaired electrons in outermost orbit. molecular orbit
theory is all orbitals of the atoms overlap and coalesce to form molecules
state the difference between electrovalen commpounds and covalent compounds
electrovalent result from a complete transfer of electrons from one atom to another. covalent
results from sharing electrons
what is a dipole moment
charge polarization in molecules usually resulting from abscence of symmetry
List the three differenttypes of Van Der Waals forces. Ehat is common feature in all
three forces
Keesom, Debye, and London. Potential energy of attraction is inversely proportional to the
6th power of the distance of separation
What are hydrogen bonds
Interaction between a molecule containing a hydrogen bound to an electronegative atom and
another electronegative atom
What are the assumptions of the kinetic theory of gases
molecules are vigorous and in random motion
collisions are completely elastic
large intermolecular distance
transition from one state to another is dependent of temp
An ideal gas
follows the 4 assumptions
Verified Correct Answers
Matter is
anything that has weight and occupies space
The Three Fundamental Dimensions
length (cm), mass (g) and time (s)
4 derived dimensions
density and specific gravity
force
pressure
work,enerhy, heat
density=
mass/volume
specific gravity=
density of substance/density of water.
force=
mass x acceleration (cm/s^2)
The weight of a body is equal to
force exerted on that body due to gravity
The weight of a substance with a mass of 1 g is
1 g x 981 cm/sec2 = 981 g cm/sec2, or 981 dynes
,Pressure is
force applied per unit area (g / (cm sec2).
work=
force X distance
expressed in Joules
energy is
the capacity to do work
matter consists of
elements and compounds
How are elements different from compounds
elements are made up of a single element. Compounds are made of two or more elements.
smallest unit of of an element is an atom.compounds is elements composed of atoms
Three fundamental units of an atom
protons, neutrons and electrons
Describe the bohr theory of atomic structure
atoms have nucleus that contain neutral neutrons positive protons and electrons orbit the
nucleus in well defined orbits designated by their quantum numbers
List the 2 main theories that describe molecular structure and state the differences
between them
, valence bond theory and molecular orbit theory. valence bond theory- molecules consist of
individual atons bound together due to unpaired electrons in outermost orbit. molecular orbit
theory is all orbitals of the atoms overlap and coalesce to form molecules
state the difference between electrovalen commpounds and covalent compounds
electrovalent result from a complete transfer of electrons from one atom to another. covalent
results from sharing electrons
what is a dipole moment
charge polarization in molecules usually resulting from abscence of symmetry
List the three differenttypes of Van Der Waals forces. Ehat is common feature in all
three forces
Keesom, Debye, and London. Potential energy of attraction is inversely proportional to the
6th power of the distance of separation
What are hydrogen bonds
Interaction between a molecule containing a hydrogen bound to an electronegative atom and
another electronegative atom
What are the assumptions of the kinetic theory of gases
molecules are vigorous and in random motion
collisions are completely elastic
large intermolecular distance
transition from one state to another is dependent of temp
An ideal gas
follows the 4 assumptions
