ACHEM Chemical Analysis

Question 1

Involves the application of methods and techniques to obtain specific objective quantitatively and qualitatively including the structural information on the nature of matter.

Answer 1

Analytical Chemistry

Question 2

Involves the application of methods and techniques to obtain specific objective quantitatively and qualitatively including the structural information on the nature of matter.

Answer 2

Analytical Chemistry

Question 3

Also known as wet chemical analysis which uses purely chemicals

Answer 3

Classical Techniques

Question 4

Measures the contamination in terms of shipping and laboratory sources

Answer 4

Trip blank

Question 5

The standard in this method became regulatory

Answer 5

Regulatory method

Question 6

Systematic procedure to achieve specific objectives using specified techniques

Answer 6

Method

Question 7

Have the highest metrologicql qualities whose operation can be described and understood instantly

Answer 7

Primary Method

Question 8

Measures the contamination in laboratories sources

Answer 8

Method or Instrument blank

Question 9

Set of written instructions on how to apply method in a particular sample

Answer 9

Procedure

Question 10

E method to measure or determine chemical of physical properties of an element, mixture or substance

Answer 10

Analytical Techniques

Question 11

Set of guidelines for analysis specifically created by a company

Answer 11

Protocol

Question 12

Use to analyse large number of samples in short period of time to identify samples that give too (+) result

Answer 12

Screening

Question 13

Graphite Furnace Atomic Absorption Spectro is an example of
Tech, meth, procedures or protocol

Answer 13

Techniques

Question 14

Signal is either for analyte, matrix, or blank and have the lowest concentration of noise (analyte) in test sample that is distinguished from zero

Answer 14

Limit of Detection

Question 15

Same of lod but with reasonable precision and accuracy

Answer 15

Limit of quantification

Question 16

In most instrumental method, it is applied only when it is possible to determine the BASELINE NOISES obtained from BLANK DETERMINATION

Answer 16

Noise ratio or Based on numerical value of signal

Question 17

A sample that contain all the components except analyte

Answer 17

Blank

Question 18

It is an indication of reproducibility or a measurement

Answer 18

Precision

Question 19

Chemical analysis qre affected by these types of errors

Answer 19

Gross, systematic and random errors

Question 20

The focus of interest in the sample or the one being analyze

Answer 20

Analyte

Question 21

They are often large and may cause a result to be either high or low

Answer 21

Gross errors

Question 22

To improve the reliability and to obtain information about the variability of the results, sample, ______ is carried through an analytical procedures

Answer 22

Replicates

Question 23

Causes the mean of a set of data to differ from the accepted value

Answer 23

Systematic or determinate error

Question 24

We just get a portion of a sample or ____ to be subjected on the analysis

Answer 24

Aliqout

Question 25

Measure of the agreement between an experimental result and qn expected or true value

Answer 25

Accuracy

Question 26

An experimental measurement that is proportional to analyte concentration

Answer 26

Signal

Question 27

A process of collecting small amount of material whose composition represent the bulk of the material being analysed

Answer 27

Sampling

Question 28

Components of the sample other than the analyte

Answer 28

Matrix

Question 29

Casues data to be more scattered or less symmetrically around the mean

Answer 29

Random error or interminate

Question 30

False positive should be ___ than false positive

Answer 30

Less

Question 31

______ is a statistical tool used to test and decide whether the result should be accepted or rejected

Answer 31

Q test

Question 32

______ is a statistical tool used to test and decide whether the result should be accepted or rejected

Answer 32

Q test

Question 33

Probability that the true mean lies within the certain interval

Answer 33

Confidence level

Question 34

Another test method in deciding for rejecting or accepting values suggested by ISO and American Society for testing and materials

Answer 34

Grubbs test

Question 35

Range values within which the true mean is expected to lie with a certain probability

Answer 35

Confidence interval

Question 36

Probability that the result is outside the confidence interval

Answer 36

Significance level

Question 37

Boundaries of the confidence interval

Answer 37

Confidence limit

Question 38

Systematic error affect ________.

Answer 38

Accuracy

Question 39

Gross error or blunder can be eliminated or corrected and often leads to ________.

Answer 39

Outliers

Question 40

Do Random error or indeterminate can be determined??

Answer 40

No because they are always present

Question 41

Gross or blunder affects Accuracy yes or no.

Answer 41

Yes

Question 42

Random error or indeterminate cannot be eliminated or corrected but can be minimized by increasing the number of measurements. True or false

Answer 42

True

Question 43

The results in Systematic errror or determinate are reproducible because results are usually inconsistent in both magnitude and direction

Answer 43

Consistend false

Question 44

The results are reproducible in random error

Answer 44

No 50/50 of being + or -

Question 45

Using the wrong reagent or instrument is an example of

Answer 45

Gross error or blunder

Question 46

A pipette that consistently deliversbthe wrong volume is an example of

Answer 46

Systematic error

Question 47

Using the pipette in a wrong position during the measurement is an example of

Answer 47

Random error

Question 48

If the Q is greater than Q crit,

Answer 48

Reject

Question 49

If G is greater than G crit

Answer 49

Reject

Question 50

If Q crit is greater then Q

Answer 50

Retain

Question 51

Non-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used

Answer 51

Measurement uncertainty

Question 52

Process by which a sample population is reduced in size to an amount of homogeneous material that can be conveniently handled in the lab in which the composition is representative

Answer 52

Sampling

Question 53

During acid spills, which of the following can be applied to the spill before treating it with adsorbents chemical

Answer 53

Na2CO3

Question 54

These are any waste materials that can be retrieved from the waste stream and free from contamination that ste materials that can be suitable beneficial use

Answer 54

Recyclable Waste