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drugs that nn cause makred alterations in normal thought processes,perceptions,and moods.
physiological need for a drug brought about by its regular use and characterized by withdrawal sickness when administration of the drug is abruptly stopped
synthetic compounds that are chemically related to the male sex hormone testosterone
a preliminary test used to redue the number of possible identites of an unknown substance
a test that identifies a specific substance based on the color and shape of crystals formed when the substance is mixed with specific reagents
any of several analytical techniques for separating organic mixtures into their components by attraction to a stationary phase by a propelled by a moving phase
electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
An analytical method for identifying a substance by its selective absorption of different wavelengths of light.
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