(Encyclopedia) streptomycinstreptomycinstrĕpˌtōmīˈsĭn [key], antibiotic produced by soil bacteria of the genus Streptomyces and active against both gram-positive and gram-negative bacteria (see Gram'…
Why Do We Need Chemistry?ChemistryWhy Study Chemistry?Why Do We Need Chemistry?What Have I Gotten Myself Into?This Stuff Is Really Fun!Who Invented Chemistry?Succeeding Where Others Have Failed "…
(Encyclopedia) gramicidingramicidingrămˌĭsīdˈən [key], antibiotic obtained from the bacterial species Bacillus brevis, which is found in soil. Gramicidin is particularly effective against gram-…
Simple Stoichiometry CalculationsChemistryStoichiometryStoichiometry: Fun to Say, Fun to Do!Simple Stoichiometry CalculationsLimiting Reactant ProblemsGas Stoichiometry Now that you've done your…
(Encyclopedia) concentration, in chemistry, measure of the relative proportions of two or more quantities in a mixture. The concentration of a solute is very important in studying chemical reactions…
The MoleChemistryThe MoleWhat's a Mole?Molar MassConverting Between Moles, Molecules, and GramsPercent Composition Depending on your educational background and life experiences, different things…
Senate Years of Service: 1939-1949Party: RepublicanREED, Clyde Martin, a Senator from Kansas; born near Champaign, Champaign County, Ill., October 19, 1871; moved with his family to Labette…
Senate Years of Service: 1869-1875Party: RepublicanBROWNLOW, William Gannaway, (uncle of Walter Preston Brownlow), a Senator from Tennessee; born near Wytheville, Wythe County, Va., August 29…
acid-base indicators acids and bases activation energy aerogel aerosol allotropy amphoterism analysis, chemical analytical chemistry anion asymmetric carbon atom atomic mass atomic mass…
