Chemical test refers to a method of analyzing chemical substances to determine their composition, properties or purity. There are multiple synonyms that are typically used for chemical test, including chemical analysis, chemical examination, chemical assay, and chemical inspection. These terms are often used interchangeably and denote the various processes involved in analyzing chemical substances. Additionally, tests may be qualitative or quantitative, where qualitative tests determine the presence or absence of a specific substance, while quantitative tests measure the amount of the substance present. Common chemical tests include flame tests, reagent tests, and gas chromatography, each of which is utilized to identify and analyze chemical compounds in a different way.