Identification of the components of a sample is_________________?
Correct answer: B. Qualitative analysis
- A. Quantitative analysis
- B. Qualitative analysis
- C. Stoichiometry
- D. Physical chemistry
Explanation
Qualitative analysis identifies which substances or ions are present in a sample, whereas quantitative analysis determines their amounts. Students may choose quantitative analysis because laboratory analysis sounds numerical, but identification alone is qualitative.
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About Classification of Organic Compounds
Organic compounds are classified by carbon skeleton into open-chain, branched-chain and cyclic compounds, including homocyclic and heterocyclic types. The classification also uses functional groups to distinguish hydrocarbons, halo compounds, alcohols, aldehydes, ketones, carboxylic acids and their derivatives, which is different from naming compounds by IUPAC rules.
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