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An analytical method for identifying a substance by its selective absorption of different wavelengths of light.
Any of several analytical techniques for separating organic mixtures into their components by attration to a stationary phase while being propelled by a moving phase.
polymers of amino acids that play basic roles in the structures and functions of living things.
A small packet of electromagnetic radiation energy. Each one contains a unit of energy equal to the product of E=hf
An analgesic or pain-killing substance that depresses vital body functions such as blood pressure, pulse rate, and breathing rate.
A substance that induces changes in mood, attitude, thought processes, and perceptions.
A substance that depresses the functions of the central nervous system. They calm irritability and anxiety and may include sleep.
Tests to identify specific substances by the color and morphology of the crystals formed when the substance is mixed with specific reagents.
passage of alcohol across the wall of the stomach and small intestine into the bloodstream.
A tiny blood vessel across whose walls exchange of materials between the blood and tissues take place.
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