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D- dehydration
- A reaction in which the elements that
make up water (twice as many hydrogen as oxygen atoms) are removed
from an organic compound.
- density
- The ratio of mass to volume.
- deprotonation
- Losing a proton (H+).
- detergent
- A substance used for removing
dirt. Detergents differ from soaps in that detergents are compounds
that are derived from sulfur-containing organic acids.
- deuterium
- The isotope of hydrogen that has one
neutron.
- dextrorotatory
- Able to rotate plane-polarized light
in a clockwise fashion.
- diffusion
- The gradual mixing of the molecules of
2 or more substances by random molecular motion.
- dilute
- A solution that contains a relatively
small amount of solute dissolved in a fixed amount of solvent.
- dimer
- A molecule or compound formed by the
combination of two identical simple molecules.
- dipole
- Produced from an unequal sharing of
electrons in a molecule in which there will be a region of partial
positive charge and a separate region of partial negative
charge.
- dissociation
- In an aqueous solution, the separation
of a compound into ions.
- distillation
- The process used to separate two or
more liquids that have different boiling points.
- dopamine
- One of many neurotransmitters that is
essential in the functioning of the central nervous system and is
often considered to be the primary reward neurotransmitter in the
brain. It is the precursor to norepinephrine.
- doping
- Using banned or illegal natural or
synthetic chemicals to enhance athletic performance.
- dose
- The measured quantity of a substance,
such as a drug, taken at one time.
- drawdown
- The the act, process, or result of
depleting, as in the drawdown of oil reserves.
- ductile
- The ability of a substance to be drawn
out to form a thin wire.
- dye
- A substance used to give color to
cloth, plastics, paper, or other materials.Dye may be made from
plants or by synthetic chemical reactions.
- dynamic equilibrium
- The condition in which the rate of a
forward process is exactly the same as the rate of a reverse
process.
Glossary created by David Shaw (Madison Area Technical College) for The Chemistry Place. Information Please® Chemistry Place, ©2005 Pearson Education, Inc. All Rights Reserved. 
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