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its constituent parts can be distinguished
visually or with the aid of a micro-
scope.
its constituent parts can be distinguished visually or with the aid of a micro- scope.
Heterogeneous
process of determining how much of a given sample is the
material by its indicated name.
process of determining how much of a given sample is the material by its indicated name.
Assay
the process of collecting a small mass of a material whose composition
accurately represents the bulk of the material being sampled.
the process of collecting a small mass of a material whose composition accurately represents the bulk of the material being sampled.
Sampling
are
portions of a material of approximately
the same size that are carried through
an analytical procedure at the same
time and in the same way.
are portions of a material of approximately the same size that are carried through an analytical procedure at the same time and in the same way.
species that causes an error in an
analysis by enhancing or attenuating
(making smaller) the quantity being
measured.
species that causes an error in an analysis by enhancing or attenuating (making smaller) the quantity being measured.
the
collection of all of the components in
the sample containing an analyte
the collection of all of the components in the sample containing an analyte
Techniques or reactions that work for
only one analyte
Techniques or reactions that work for only one analyte
Techniques or reactions that apply to
only a few analytes
Techniques or reactions that apply to only a few analytes
the process of deter-
mining the proportionality between
analyte concentration and a measured
quantity.
the process of deter- mining the proportionality between analyte concentration and a measured quantity.
process of continuous measurement and control
process of continuous measurement and control
the cycle of measurement, comparison, and contro
the cycle of measurement, comparison, and contro
non-SI unit of
length that is widely used to express the
wavelength of very short radiation such
as X-rays (1 Å 5 0.1 nm 5 10210 m).
Thus, typical X-radiation lies in the range
of 0.1 to 10 Å.
non-SI unit of length that is widely used to express the wavelength of very short radiation such as X-rays (1 Å 5 0.1 nm 5 10210 m). Thus, typical X-radiation lies in the range of 0.1 to 10 Å.
invariant measure of the quantity of matter in an object
invariant measure of the quantity of matter in an object
force of at-
traction between an object and its surroundings, principally the earth. Because gravi-
tational attraction varies with geographical location, the weight of an object depends
on where you weigh it.
force of at- traction between an object and its surroundings, principally the earth. Because gravi- tational attraction varies with geographical location, the weight of an object depends on where you weigh it.
the SI unit for the amount of a chemical substance
the SI unit for the amount of a chemical substance
substance is the mass in
grams of 1 mole of that substance.
substance is the mass in grams of 1 mole of that substance.
number of
moles of that species that is contained in 1 liter of the solution (no
number of moles of that species that is contained in 1 liter of the solution (no
the quantitative relationship among the amounts of reacting chem-
ical species. This section provides a brief review of stoichiometry and its applications
to chemical calculations.
the quantitative relationship among the amounts of reacting chem- ical species. This section provides a brief review of stoichiometry and its applications to chemical calculations.
are samples of about the
same size that are carried through an
analysis in exactly the same way.
are samples of about the same size that are carried through an analysis in exactly the same way.
the middle value in a
set of data that has been arranged in
numerical order.
the middle value in a set of data that has been arranged in numerical order.
result that differs
significantly from others in the set.
result that differs significantly from others in the set.
two or more
measurements is their average value.
two or more measurements is their average value.
closeness of results to
others obtained in exactly the same way.
closeness of results to others obtained in exactly the same way.
measurement
is the difference between the measured
value and the true value.
measurement is the difference between the measured value and the true value.
