LONG EXAM

Question 1

the application of analytical-chemical methods to the chemical problems of metallurgy, including problems of valuation and utilization as well as of production

Answer 1

Metallurgical Analysis

Question 2

the result of definitely ascertaining the position, nature, amount, etc. of any measurement, weighing, or counting

Answer 2

Determination

Question 3

The result of approximately ascertaining numbers, quantities, magnitudes, etc. without actual enumeration, weighing, or measurement

Answer 3

Estimation

Question 4

PRE-REQUISITE of effective analysis

Answer 4

Sampling

Question 5

The art of securing a small weight or fraction, that is representative of a relatively large mass or amount

Answer 5

Sampling

Question 6

The operation of removing a part of the bulk material, so as to reduce quantity, with minimum alteration of all other characteristics

Answer 6

Sampling

Question 7

is a progressive process in which the original material is reduced in quantity to the final mass of sample convenient for analysis

Answer 7

Sampling

Question 8

generally defined as the quantitative estimation of the metals in ores and furnace products

Answer 8

Assaying

Question 9

also referred to as the determination of all the constituents, both metallic and non-metallic, of ores and metallurgical products

Answer 9

Assaying

Question 10

AAS, ICP

Answer 10

Spectroscopic Methods

Question 11

XRF, XRD

Answer 11

X-Ray Methods

Question 12

determination of all present elements and/or compounds in a given system

Answer 12

Elemental Analysis

Question 13

used to reveal all the chemicals present; normally, the results are expressed in terms of the various oxides present

Answer 13

Chemical Methods

Question 14

(Gravimetry, Titrimetry, etc)

Answer 14

Classical Methods

Question 15

the use of modern instruments to expose and isolate certain characteristics of elements

Answer 15

Instrumental Methods

Question 16

dissolution of precious metal values from finely divided sample in boiling aqua regia

Answer 16

Acid Digestion

Question 17

a mixture of concentrated nitric and hydrochloric acids

Answer 17

Aqua Regia

Question 18

involves measuring the absorption of light by atoms

Answer 18

AAS

Question 19

provides a rapid and precise means of monitoring up to 50 elements simultaneously;
suitable for almost every element, excluding halogens and inert gases; an ionization source that fully decomposes a sample into its constituent elements and transforms those elements into ions

Answer 19

ICP

Question 20

a non-destructive analytical technique used to determine the elemental composition of materials; determines the chemistry of a sample by measuring the fluorescent (or secondary) X-ray emitted from a sample when it is excited by a primary X-ray source

Answer 20

X-Ray Fluorescence

Question 21

a versatile and nondestructive analytical technique that reveals detailed structural and chemical information about the crystallography of materials; provides information about how the various elements are combined together

Answer 21

X-Ray Diffraction

Question 22

analyzes for chemistry

Answer 22

XRF

Question 23

determines the mineralogy

Answer 23

XRD

Question 24

used to make small structures and samples visible by providing a magnified image of how they interact with visible light, e.g., their absorption, reflection and scattering

Answer 24

Light Microscopy

Question 25

 science of imaging specimens on a very fine scale using an electron beam

Answer 25

Electron Microscopy

Question 26

describes the detail an image holds; It quantifies how close lines can be to each other and still be visibly resolved

Answer 26

Resolution

Question 27

The zone of acceptable sharpness; The distance in front of and beyond the subject that appears to be in focus

Answer 27

Depth of Field

Question 28

the electron beam is incident onto a defined area of the specimen

Answer 28

TEM

Question 29

the electron beam is focused to a spot, and is scanned sequentially across the specimen

Answer 29

SEM