Forensic Chem: Learning Activity Crossword Puzzle

QUESTIONS LIST:

• qualitative : this analysis determines the chemical composition, class, or type of material present in a sample
• quantitative : this analysis determines the numerical amount or concentration of a substance present in a sample
• organic : analysis focusing on compounds containing carbon, derived from living organisms or synthetic materials
• inorganic : analysis dealing with non-carbon-based substances like metals, minerals, soil, or salts
• chromatography : a physical separation process where sample mixture components (solutes) are separated
• tstwett : russian botanist, mikhail, known as the father of chromatography
• mobile phase : in chromatography, this phase is the liquid or gas containing the dissolved substances intended to be separated
• stationary phase : this is the porous solid matrix component of chromatography
• retention time : the specific time period required for a compound to exit a chromatographic column
• helium : this is an example of an inert gas used in the gas chromatography instrumental process
• volatile : refers to compounds, such as paint thinner or blood alcohol, that must be collected for gas chromatography
• mass spectrum : the graphic output produced by the mass spectrometer detector
• ionization : the critical step in mass spectrometry where sample molecules are broken apart, or fragmented, into characteristic ions
• spectra : the orderly arrangement of a complex phenomenon like light or mass
• spectroscopy : the study of spectra, which is the essential method of forensic identification
• non destructive : a desirable property of many spectroscopic techniques that preserves the valuable physical evidence
• nitric acid : an acid used during sample preparation for atomic absorption spectroscopy