Analytical Chemistry Exam -1 with correct answers

Analytical Chemistry Exam #1 with correct ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




answers


Analytical chemistry involves _________,
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__________, and ____________ the relative ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




amounts of components in a sample matter. - correct
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answers ✔✔separating
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identifying ||\\||\\




determining


Everything is made of ___________. - correct ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




answers ✔✔Chemicals
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Analytical chemists determine ______ and
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___________. - correct answers ✔✔what ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




how much
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,Analytical chemistry play an important role in nearly ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




all aspects of chemistry including: - correct answers
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✔✔Agricultural ||\\||\\




Clinical
Environmental
forensic ||\\||\\




manufacturing and industrial chemistry ||\\||\\ ||\\||\\ ||\\||\\




______________ is an example of the important role ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




of analytical chemistry in the industry. This unit in the
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industry is responsible for determining the
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_________ of manufactured products which ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




depends on proper chemical proportions. - correct ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




answers ✔✔Quality Control Unit ||\\||\\ ||\\||\\ ||\\||\\




quality


Types of Analysis - correct answers ✔✔quantitative
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and qualitative ||\\||\\

,Qualitative analysis - correct answers ✔✔Reveals the ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




chemical identity of a species in the sample "What
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chemicals are present" ||\\||\\ ||\\||\\




Quantitative analysis - correct answers ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




✔✔Establishes relative amount of one or more of ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




these species in numerical terms "Tells how much"
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Qualitative analysis _________ Quantitative one - ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




correct answers ✔✔Proceeds ||\\||\\ ||\\||\\




Analytes - correct answers ✔✔Are the components ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




of a sample to be determined
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Quantitative Methods - correct answers ✔✔- ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




Volumetric Methods (volume) ||\\||\\ ||\\||\\




-Gravimetric Methods (mass) ||\\||\\ ||\\||\\

, -Electroanalytical Methods (Current, potential, ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




resistance)
-Spectroscopic Methods (Absorption or/and ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




production of electromagnetic radiation) ||\\||\\ ||\\||\\ ||\\||\\




Steps in quantitative analysis: (7) - correct answers
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✔✔1) Select Method ||\\||\\ ||\\||\\




2) Acquire Sample
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3) Process Sample
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4) Eliminate Interferences
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5) Measure & calibrate
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6) Calculate
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7) Statistical Evaluation of Results
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Choosing a method of quantitative analysis depends ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\




on: (5) - correct answers ✔✔-Accuracy and precision
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required (error acceptable) ||\\||\\ ||\\||\\ ||\\||\\




- Detection limits
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