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chemical    音标拼音: [k'ɛməkəl] [k'ɛmɪkəl]
a. 化学的
n. 化学制品,化学药品

化学的化学制品,化学药品

chemical
化学

chemical
adj 1: relating to or used in chemistry; "chemical engineer";
"chemical balance" [synonym: {chemical}, {chemic}]
2: of or made from or using substances produced by or used in
reactions involving atomic or molecular changes; "chemical
fertilizer"
n 1: material produced by or used in a reaction involving
changes in atoms or molecules [synonym: {chemical}, {chemical
substance}]

Chemical \Chem"ic*al\, n.
A substance used for producing a chemical effect; a reagent.
[1913 Webster]


Chemical \Chem"ic*al\, a.
Pertaining to chemistry; characterized or produced by the
forces and operations of chemistry; employed in the processes
of chemistry; as, chemical changes; chemical combinations.
[1913 Webster]

{Chemical attraction} or {Chemical affinity}. See under
{Attraction}.
[1913 Webster]

152 Moby Thesaurus words for "chemical":
Chile saltpeter, absolute alcohol, acetate, acetone, acid, acidity,
agent, alcohol, aldehyde, alkali, alkalinity, alloisomer, amine,
ammonia, amyl alcohol, anhydride, anion, antacid, arsenate,
arsenite, atom, base, basic, basic anhydride, benzoate,
bicarbonate, bicarbonate of soda, bichloride of mercury,
biochemical, bisulfate, borate, borax, bromide, calcium carbonate,
calcium hydroxide, carbide, carbohydrate, carbon dioxide,
carbon monoxide, carbonate, cation, chemical element, chemicals,
chemicobiological, chemicoengineering, chemicomineralogical,
chemicophysical, chemurgic, chlorate, chlorite, chromate,
chromoisomer, citrate, compound, copolymer, copolymeric,
copolymerous, copperas, cyanide, dehydrated alcohol, dichromate,
dimer, dimeric, dimerous, dioxide, disulfide, electrochemical,
element, elemental, elementary, ester, ethanol, ether, ethyl,
ethyl alcohol, fluoride, formaldehyde, fulminate, halide, halogen,
heavy chemicals, heteromerous, high polymer, homopolymer, hydracid,
hydrate, hydride, hydrocarbon, hydroxide, hypochlorite,
inorganic chemical, inorganic chemistry, iodide, ion, isomer,
isomerous, isopropyl alcohol, ketone, lactate, macrochemical,
macromolecule, metamer, metameric, methane, methanol, methyl,
methyl alcohol, molecule, monomer, monomerous, monoxide,
neutralizer, niter, nitrate, nitride, nitrite, nonacid,
organic chemical, oxalate, oxide, oxyacid, permanganate, peroxide,
petrochemical, phosphate, phosphide, photochemical,
physicochemical, phytochemical, polymer, polymeric, potash,
potassium nitrate, pseudoisomer, radical, radiochemical, reagent,
sal ammoniac, salt, saltpeter, silicate, sodium bicarbonate,
sodium bromide, sodium chloride, sodium hypochlorite, sulfacid,
sulfate, sulfide, sulfite, tartrate, thermochemical, trimer

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  • Chemistry | Definition, Topics, Types, History, Facts | Britannica
    Chemistry is the science of the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes Chemistry is concerned with the properties of atoms and the laws governing their combinations
  • Chemical compound | Definition, Examples, Types | Britannica
    Chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds
  • Chemical synthesis | Organic Inorganic Reactions | Britannica
    Chemical synthesis, the construction of complex chemical compounds from simpler ones It is the process by which many substances important to daily life are obtained It is applied to all types of chemical compounds, but most syntheses are of organic molecules Chemists synthesize chemical
  • Chemical engineering | Processes, Principles Applications | Britannica
    chemical engineering, the development of processes and the design and operation of plants in which materials undergo changes in their physical or chemical state Applied throughout the process industries, it is founded on the principles of chemistry, physics, and mathematics The laws of physical chemistry and physics govern the practicability and efficiency of chemical engineering operations
  • Chemical bonding | Definition, Types, Examples | Britannica
    Chemical bonding, any of the interactions that account for the association of atoms into molecules, ions, crystals, and other species When atoms approach one another, their electrons interact and tend to distribute themselves in space so that the total energy is lower than it would be in any alternative arrangement
  • Sodium | Facts, Uses, Properties | Britannica
    Sodium, chemical element of the alkali metal group in the periodic table
  • Chemical Products Portal | Britannica
    Chemical Products Although nature provides us with a staggering amount of natural resources, humankind has also made use of a great variety of man-made compounds and substances The chemical industry converts raw materials such as fossil fuels, water, salt, limestone, and sulfur into primary, secondary, and tertiary products
  • Chemical industry | Overview, Importance, History | Britannica
    Chemical industry, complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives Raw materials include fossil fuels and inorganic chemicals An average chemical product is passed from factory to factory several times before it emerges into the market
  • Weathering | Physical, Chemical Biological Effects | Britannica
    Weathering, disintegration or alteration of rock in its natural or original position at or near the Earth’s surface through physical, chemical, and biological processes induced or modified by wind, water, and climate During the weathering process the translocation of disintegrated or altered
  • Manganese | Uses, Facts, Compounds | Britannica
    Manganese, chemical element that is a silvery white, hard, brittle metal of Group 7 in the periodic table It was recognized as an element in 1774 by the Swedish chemist Carl Wilhelm Scheele Although rarely used in pure form, manganese is essential to steelmaking





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