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carbon dioxide

(Encyclopedia) carbon dioxide, chemical compound, CO2, a colorless, odorless, tasteless gas that is about one and one-half times as dense as air under ordinary conditions of temperature and pressure…

Chemistry: Separating Mixtures

Separating MixturesChemistryElements, Compounds, and MixturesPure SubstancesShake It Up: MixturesColloids: Somewhere in BetweenSeparating Mixtures One of the most important things that chemists do…

Osama bin Laden is SEALed and Delivered

Due to standard Navy procedure, we will probably never know the names of the men who brought down Osama bin Laden US Navy SEALs insignia Related Links Osama bin Laden Al-…

acids and bases

(Encyclopedia) acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Another theory that…

Grignard reagent

(Encyclopedia) Grignard reagentGrignard reagentgrēnyärdˈ rēāˈjənt [key], any of an important class of extremely reactive chemical compounds used in the synthesis of hydrocarbons, alcohols, carboxylic…

hydrogen peroxide

(Encyclopedia) hydrogen peroxide, chemical compound, H2O2, a colorless, syrupy liquid that is a strong oxidizing agent and, in water solution, a weak acid. It is miscible with cold water and is…

alkyl group

(Encyclopedia) alkyl groupalkyl groupălˈkĭl [key], in chemistry, group of carbon and hydrogen atoms derived from an alkane molecule by removing one hydrogen atom (see radical). The name of the alkyl…

borax

(Encyclopedia) borax or sodium tetraborate decahydratesodium tetraborate decahydratesōˈdēəm tĕˌtrəbôrˈāt dĕkˌəhīˈdrāt [key], chemical compound, Na2B4O7·10H2O; sp. gr. 1.73; slightly soluble in cold…

sulfide

(Encyclopedia) sulfide, chemical compound containing sulfur and one other element or sulfur and a radical. Sulfides may be salts or esters of hydrogen sulfide, H2S, or may be formed directly, e.g.,…

valine

(Encyclopedia) CE5 valinevalinevălˈēn [key], organic compound, one of the 22 α-amino acids commonly found in animal proteins. Only the l-stereoisomer appears in mammalian protein. It is one of…