introduction to ana chem

Question 1

It is the branch
of chemistry
that deals with
the analysis of
different
substances.

Answer 1

analytical chemistry

Question 2

Four basic
questions that
analytical
chemistry helps
to answer about
matter

Answer 2

what
how much
where
what structure or form

Question 3

methods of analysis

Answer 3

classical and instrumental

Question 4

Nitric acid is applied to a
sample of metal; if the metal dissolves, it indicates the absence of gold, while if it is unreactive, it indicates the presence of gold

Answer 4

acid test for gold

Question 5

It employs phenolphthalein as an indicator to check for the presence of hemoglobin in the given analyte (from colorless to pink)

Answer 5

kastle-meyer test

Question 6

metal ions are heated in a flame to observe characteristic-colored flames emitted

Answer 6

flame test

Question 7

the mass of a precipitate
formed by a chemical reaction is measured to determine the concentration or amount of a specific analyte in a sample

Answer 7

gravimetric analysis

Question 8

the volume of a titrant solution required to react completely with the analyte in a sample is measured to determine its concentration

Answer 8

volumetric analysis

Question 9

The interaction of
electromagnetic radiation with a sample is used to identify and quantify substances based on their characteristic absorption or emission spectra

Answer 9

spectroscopy

Question 10

the flow of electricity through a cell containing a solution of interest is used to analyze and quantify substances through redox reactions occurring at electrodes

Answer 10

electrochemistry

Question 11

It is used to measure the heat of a chemical reaction

Answer 11

calorimetry

Question 12

separates compounds in a mixture based on their
interactions with a stationary phase and a mobile phase

Answer 12

chromatography

Question 13

ions are separated based on their mass-to charge ratio, allowing for identification of compounds and determination of molecular structures

Answer 13

mass spectrometry

Question 14

flame test

Answer 14

qualitative

Question 15

paper chromatography

Answer 15

qualitative

Question 16

mass spectroscopy

Answer 16

quantitative

Question 17

acid test for gold

Answer 17

qualitative

Question 18

titration

Answer 18

qualitative

Question 19

electrochemistry

Answer 19

quantity

Question 20

gas chromatography

Answer 20

quantitative

Question 21

kastle-meyer

Answer 21

qualitative

Question 22

calorimetry

Answer 22

quantitative

Question 23

UV VIS spectroscopy

Answer 23

quantitative

Question 24

determines nutritional content, detect contaminants, and ensure quality

Answer 24

food testing

Question 25

used for blood tests, drug testing, and developing new medications

Answer 25

medicine

Question 26

helps detect pollutants in air, soil, and water

Answer 26

environment

Question 27

identifies substances involved in criminal investigations

Answer 27

forensic analysis

Question 28

employed to study biomolecules and their interactions, facilitating advancements in medical diagnostics and drug development

Answer 28

bioanalytical chemistry

Question 29

applied for quality control, ensuring the integrity, purity, and safety of products

Answer 29

industry

Question 30

How close are the measurements to the true value

Answer 30

accuracy

Question 31

How reproducible are measurements?

Answer 31

precision

Question 32

refer to discrepancies between the measured value and the true value of a quantity being measured

Answer 32

error

Question 33

worst error

Answer 33

systematic error

Question 34

Analytical chemistry began in the ___________ with the work of French chemist ________ and others; the disciple was further developed in the 19th century by ___________ and _________

Answer 34

late eighteenth century; Antoine-Laurent Lavoisier; Carl Fresenius and Karl Friedrich Mohr.

Question 35

in year _______, As a pharmacist’s apprentice in _____________, Fresenius developed an __________________ that, when it was later published, served as the ____________

Answer 35

1848; Frankfurt, Germany; EXTENSIVE QUALITATIVE ANALYSIS scheme; first textbook of analytical chemistry

Question 36

in year ______, The _______ was __________ by _____________ who discovered _________.

Answer 36

1890; first instrumental analysis; FLAME EMISSIVE SPECTROMETRY; Robert Bunsen and Gustav Kirchhoff; rubidium and caesium

Question 37

During this period ______, ____________ becomes progressively _____ in the field. In particular, many of the _____________were discovered in the early 20th century

Answer 37

1900; instrument analysis; dominant; BASIC SPECTROSCOPIC AND SPECTROMETRIC TECHNIQUES;

Question 38

in year _____, Many of these techniques began to be used together as ____________ to achieve complete characterization of samples.

Answer 38

1970; hybrid techniques

Question 39

in __________ period, Also saw an ____ of the application of analytical chemistry from somewhat _____ chemical questions to forensic environmental, industrial and medical questions, such as histology

Answer 39

late 20th century; EXPANSION ; academic