Introduction to Analytical Chemistry

Question 1

Branch of chemistry dealing with quantitative and qualitative determination for the characterization of matter.

Answer 1

Analytical Chemistry

Question 2

“Science of chemical measurements”

Answer 2

Analytical Chemistry

Question 3

It deals with
o Separating,
o Identifying,
o And quantifying the amount(s) of the component(s) of an analyte.

Answer 3

Analytical Chemistry

Question 4

The component/s of a sample that are to be determined

Answer 4

Analyte

Question 5

How can the species of interest be separated from the sample matrix for better quantitation and identification?

Answer 5

Separation

Question 6

Does the sample contain substance A?

Answer 6

Detection

Question 7

What is the identity of the substance in the sample?

Answer 7

Identification

Question 8

How much of substance A is in the sample?

Answer 8

Quantitation

Question 9

Two Types of chemical analysis

Answer 9

Quantitative Analysis & Qualitative Analysis

Question 10

Deals with the determination of how much
more of one or more constituent is present.

Answer 10

Quantitative Analysis

Question 11

Deals with the identification of elements, ions, and compounds in a sample.

Answer 11

Qualitative Analysis

Question 12

Uses chemical analysis and instrumental analysis

Answer 12

Quantitative Analysis

Question 13

Uses elemental analysis and indentification of sample structure to be analyzed

Answer 13

Qualitative Analysis

Question 14

Representative of the tested material

Answer 14

Sample

Question 15

all substances in the sample

Answer 15

Matrix

Question 16

specific substance we measure

Answer 16

Analyte

Question 17

1. Gathering measurements
2. Reporting results
3. Posing a question
4. Using an appropriate sample
5. Sample preparation

Answer 17

Analytical technique

Question 18

Occurs with other substances but exhibits preferences for the substance of interest

Answer 18

Selective Test/Reaction

Question 19

Only with the substance of interest

Answer 19

Specific test/reaction

Question 20

It is a scientific principle useful in providing information about composition.

Answer 20

Technique

Question 21

It is the adaptation of the technique selective for the sample, a means to analyze a sample of a certain analyte in a specific matrix.

Answer 21

Method

Question 22

It outlines directions for the use of the method.

Answer 22

Procedure

Question 23

It is the set of stringent written directions that must be followed for a given purpose and requirement.

Answer 23

Protocol

Question 24

Provide the hierarchy of methodology

Answer 24

1.Technique
2. Method
3. Procedure
4. Protocol

Question 25

Methods of Analysis

Answer 25

Classical Method & Instrumental Method

Question 26

The earliest methods of analysis

Answer 26

Classical Method

Question 27

These analyses are based on the changes in mass or volume to determine the amount of analyte

Answer 27

Classical Method

Question 28

Also termed as wet chemical methods as these involves liquid phases in analysis.

Answer 28

Classical Method

Question 29

Involves the isolation and/or conversion of a sought-for substance into a form that can be weighed directly/indirectly.

Answer 29

Gravimetry

Question 30

Involves the measurement of the volume of a solution containing sufficient reagent (titrant) to react with the analyte.

Answer 30

Volumetry

Question 31

Utilize electrical properties related to the analyte to measure its amount.

Answer 31

Electrochemical

Question 32

Take advantages of the interaction of the electromagnetic radiation with analyte to measure its amount.

Answer 32

Spectroscopic

Question 33

Involves manipulation of temperature to produce the measured parameter.

Answer 33

Thermoanalytical

Question 34

Involve separation of sample components based on affinity to a mobile and stationary phase.

Answer 34

Chromatographic

Question 35

most popular coupled methods to enhance analytical performance

Answer 35

chromatographic methods combined with spectroscopic methods.

Question 36

Types of Analysis

Answer 36

Complete Analysis, Partial Analysis & Ultimate Analysis

Question 37

All constituents in the sample are being determined quantitatively.

Answer 37

Complete Analysis

Question 38

Determines the number of certain constituents in a sample,

Answer 38

Partial Analysis

Question 39

Percent of each element in a substance, usually for determining the formula of a substance.

Answer 39

Ultimate Analysis

Question 40

Provide the required sample mass of each method: Macro: Semimicro: Micro: Ultramicro:

Answer 40

Macro: >100mg Semimicro: 10-100mg Micro: 1-10mg Ultramicro: <1mg

Question 41

Provide method to be used in each given sample mass 1. >100mg 2. 10-100mg 3. 1-10mg 4. <1mg

Answer 41

1. Macro 2. Semimicro 3. Micro 4. Ultramicro

Question 42

Provide the type of constituent applicable for each analyte level 1. >1% 2. 0.01-1% 3. 0.001-0.01% 4. <0.0001-0.001%

Answer 42

1. Major 2. Minor 3. Trace 4. Ultra-trace

Question 43

Provide the type of analyte level applicable for each constituent 1. Major 2. Minor 3. Trace 4. Ultra-trace

Answer 43

1. >1% 2. 0.01-1% 3. 0.001-0.01% 4. <0.0001-0.001%

Question 44

Provide the correct order of steps in quantitative analysis

Answer 44

Step 1: Make of an overall plan Step 2: Sampling Step 3: Sample Presentation Step 4: Analysis Step 5: Calculation and Evaluation of Result

Question 45

Provide the correct order of steps in quantitative analysis

Answer 45

Step 1: Make of an overall plan Step 2: Sampling Step 3: Sample Presentation Step 4: Analysis Step 5: Calculation and Evaluation of Result