Analytical Chemistry Basics
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Questions and Answers

What is the main goal of chemical analysis?

  • To separate the components of a sample
  • To determine the physical properties of a sample
  • To determine what matter is and how much of it exists (correct)
  • To identify the components of a sample
  • What type of analysis identifies what the unknown is?

  • Instrumental analysis
  • Classical analysis
  • Quantitative analysis
  • Qualitative analysis (correct)
  • What type of methods use color, indicators, boiling points, and odors for identification?

  • Spectroscopy methods
  • Instrumental methods
  • Classical methods (correct)
  • Chromatography methods
  • What is considered when selecting an analytical method?

    <p>All of the above, plus interference from sample components and physical properties of the sample matrix</p> Signup and view all the answers

    What type of analysis determines how much of the unknown is present?

    <p>Quantitative analysis</p> Signup and view all the answers

    What is a common use of chromatography in analytical chemistry?

    <p>For both qualitative and quantitative analysis</p> Signup and view all the answers

    What is spectroscopy defined as?

    <p>Science that deals with the interactions of various types of radiation with matter</p> Signup and view all the answers

    What is responsible for most phenomena in spectroscopy?

    <p>Electric field</p> Signup and view all the answers

    What is the term for the stream of discrete particles or wave packets of energy in spectroscopy?

    <p>Photons</p> Signup and view all the answers

    What is the characteristic of electromagnetic radiation that allows it to pass through a vacuum?

    <p>It does not require a supporting medium</p> Signup and view all the answers

    What is the purpose of a stimulus energy source in instrumental methods?

    <p>To stimulate a measurable response from the analyte</p> Signup and view all the answers

    What are the types of instrumental methods based on?

    <p>Atomic and molecular spectroscopy</p> Signup and view all the answers

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