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Glossary of Chemical Terms - O
OA B C D E F G H I J K L M N O P Q R S T U V W X Y Z octet A stable group of eight electrons in the outer shell of an atom. ohm The unit of electrical resistance.A current of 1 amp at a potential…Glossary of Chemical Terms - P
PA B C D E F G H I J K L M N O P Q R S T U V W X Y Z peptide A small polymer of amino acids, formed by the condensation copolymerization of several amino acids. period The horizontal rows in the…Glossary of Chemical Terms - Q
QA B C D E F G H I J K L M N O P Q R S T U V W X Y Z quanta Plural of quantum. quantum The minimum energy change of an atom emitting or absorbing energy. quartz An abundant mineral consisting…Glossary of Chemical Terms - R
RA B C D E F G H I J K L M N O P Q R S T U V W X Y Z radiation Energy emitted from some object. radical A species with an odd number of electrons; formerly called free radical. radioactivity…Glossary of Chemical Terms - S
SA B C D E F G H I J K L M N O P Q R S T U V W X Y Z saccharin A compound, C7H5NO3S, that is several hundred times sweeter than can sugar and is used as a calorie-free sweetener. salt An ionic…Glossary of Chemical Terms - T
TA B C D E F G H I J K L M N O P Q R S T U V W X Y Z taxol A naturally occurring compound (extracted from the bark of the Pacific yew tree) that has been approved by the U.S. Food and Drug…Glossary of Chemical Terms - U
UA B C D E F G H I J K L M N O P Q R S T U V W X Y Z unit A set magnitude of measurements used to express a certain type of physical quantity such as length, mass, and time. The SI units replaced…Glossary of Chemical Terms - V
VA B C D E F G H I J K L M N O P Q R S T U V W X Y Z vapor Another name for a gas. venting Providing an opening for the discharge of gases or the relief of pressure. viscosity Resistance of a…Glossary of Chemical Terms - W
WA B C D E F G H I J K L M N O P Q R S T U V W X Y Z wavelength The distance between any two identical points in consecutive cycles of a wave.Often measured from peak to peak or crest to crest.…Glossary of Chemical Terms - X
XA B C D E F G H I J K L M N O P Q R S T U V W X Y Z X ray Electromagnetic radiation of high frequency and short wavelength (ranging from 10-11 to 10-9 meters). X-ray crystallography A technique…Trending
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