Sampling Methods in Analytical Chemistry

Instructions:

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question 1 of 3

You are going to analyze a grassy area for magnesium content. The area has three different grasses in three large areas. What type of sample method should you use to gather a representative sample? You need to gather a _____.

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1. You are going to analyze a grassy area for magnesium content. The area has four different grasses spread evenly through a large field. What type of sample method should you use to gather a representative sample? You need to gather a _____.

2. There are several steps used to transform a complicated substance into a sample for laboratory analysis. Put these steps in the proper order: laboratory sample, bulk sample, aliquot, and lot.

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About This Quiz and Worksheet

With the help of this quiz and worksheet combo, you can check your knowledge of sampling methods in analytical chemistry. Questions are based on gathering a representative sample and also a term for a small portion of a sample used in a lab.

Quiz and Worksheet Goals

Test what you know of the lesson by taking this quiz, which includes questions about the following subjects:

  • Analyzing a grassy area for magnesium
  • Placing the steps of an analysis in correct order
  • A sample with the same consistency throughout
  • The name for a small portion of a sample used in testing

Skills Practiced

  • Information recall - remember what you have learned about samples with similar consistency
  • Defining key concepts - ensure that you can name different ways to gather representative samples
  • Knowledge application - use what you know to answer questions about the steps in an analysis

Additional Learning

Take advantage of the lesson titled Sampling Methods in Analytical Chemistry to get more of a review. You can find topics including those below when you use the lesson:

  • Other types of samples
  • Random heterogeneous material
  • Visualizing the sample hierarchy
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