SAT II Chemistry Exam Prep

Category - General Chemistry

Several unknown solutions have been tested for the presence of Group 1 or Group 2 metals using a flame-test protocol. Which of the following methods would be the best way to represent the collected data?
  1. A table
  2. A histogram
  3. A scatter plot
  4. A line graph
Explanation
Correct Response: A. A flame-test protocol gives results that are qualitative in nature (e.g., the presence of sodium in Group 1 gives a yellow flame color). Qualitative results are conveyed with tables. All other options require numerical data (which is not obtained in this experiment). B is incorrect because a histogram requires a numerical value for frequency. C is incorrect because scatter plots are used to show the relationship between two numerical sets of data (e.g., a graph of students’ heights versus weights). D is incorrect because line graphs are used to show the numerical relationship between two sets of data.
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