CHAP 1

Question 1

indicates
the amount of each substance in a
sample.

Answer 1

Quantitative analysis

Question 2

reveals
the identity of the elements and
compounds in a sample.

Answer 2

Qualitative analysis

Question 3

are the components of a
sample that are determined.

Answer 3

Analytes

Question 4

QUANTITATIVE ANALYTICAL METHODS

Answer 4

Gravimetric methods
volumetric method
electroanalytical methods
spectroscopic methods

Question 5

_____________determine the mass of the analyte or some compound chemically related to it

Answer 5

Gravimetric methods

Question 6

___________measures
the volume of a solution containing sufficient reagent to react completely with the
analyte

Answer 6

A volumetric method measures
the volume of a solution containing sufficient reagent to react completely with the
analyte

Question 7

______________________measure electrical properties such as potential,
current, resistance, and quantity of electrical charge

Answer 7

Electroanalytical methods measure electrical properties such as potential,
current, resistance, and quantity of electrical charge

Question 8

_______________ explore
the interaction between electromagnetic radiation and analyte atoms or molecules or
the emission of radiation by analytes.

Answer 8

Spectroscopic methods explore
the interaction between electromagnetic radiation and analyte atoms or molecules or
the emission of radiation by analytes.

Question 9

Steps of a typical quantitative analysis

Answer 9

1. choosing a method
2. acquiring the sample
3. processing the sample
4. eliminating interferences
5. calibrating and measuring concentration
6. calculating results
7. evaluating results by estimating reliability

Question 10

The process of continuous measurement and control

Answer 10

feedback system

Question 11

the cycle of measurement, comparison, and control

Answer 11

feedback loop

Question 12

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.

Answer 12

replicate samples or replicates

Question 13

the
collection of all the components in
the sample containing an analyte.

Answer 13

matrix or sample matrix

Question 14

is the process of
determining the proportionality
between analyte concentration and a
measured quantity

Answer 14

calibration

Question 15

it is
a species that causes an error in an
analysis by enhancing or attenuating
(making smaller) the quantity being
measured.

Answer 15

interference or interferent

Question 16

a material, often an
alkali metal salt, that is mixed
with the sample and heated to
form a fused salt.

Answer 16

flux

Question 17

assay

Answer 17

the process of
determining how much of a given
sample is the material by its indicated
name

Question 18

the process of
collecting a small mass of a material whose composition accurately represents the bulk
of the material being sampled

Answer 18

sampling

Question 19

Chemical grades

Answer 19

1. reagent grade
2. primary-standard grade
3. special-purpose reagent chemicals