chemical

Definitions

  • Chemical plant to make wood pulp
    Chemical plant to make wood pulp
  • WordNet 3.6
    • adj chemical relating to or used in chemistry "chemical engineer","chemical balance"
    • adj chemical of or made from or using substances produced by or used in reactions involving atomic or molecular changes "chemical fertilizer"
    • n chemical material produced by or used in a reaction involving changes in atoms or molecules
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Webster's Revised Unabridged Dictionary
  • Interesting fact: Cotton crops can be sprayed up to 40 times a year making it the most chemical-intensive crop in the world
    • n Chemical A substance used for producing a chemical effect; a reagent.
    • a Chemical Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations.
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Century Dictionary and Cyclopedia
  • Interesting fact: Bananas contain a natural chemical which can make a person happy. This same chemical is found in Prozac
    • chemical Pertaining to chemistry: as, a chemical experiment.
    • chemical Pertaining to the phenomena with which chemistry deals and to the laws by which they are regulated; accordant with the laws of chemistry.
    • chemical Also chemic.
    • chemical CaCl2 + Na2CO3 = CaCO3 + 2NaCl.
    • chemical This is a true equation in the algebraic sense, because the value of the two members is the same. Since matter is indestructible, nothing is lost in the reaction, and the weights of calcium chlorid and sodium carbonate which reacted must be precisely the same as the combined weights of the resultant calcium carbonate and sodium chlorid.
    • n chemical A substance produced by a chemical process; a chemical agent prepared for scientific or economic use: as, the manufacture of chemicals.
    • chemical Versed in chemistry; engaged in the study of chemistry or in chemical research or investigation: as, a chemical philosopher; a chemical friend.
    • chemical Of or pertaining to alchemy or alchemists. Also chymical.
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Quotations

  • Carl Jung
    Carl%20Jung
    “The meeting of two personalities is like the contact of two chemical substances. If there is any reaction, both are transformed.”
  • Ralph Waldo Emerson
    Ralph%20Waldo%20Emerson
    “'Tis a superstition to insist on a special diet. All is made at last of the same chemical atoms.”
  • Charles Kingsley
    Charles%20Kingsley
    “Feelings are like chemicals, the more you analyze them the worse they smell.”
  • William S. Burroughs
    William%20S.%20Burroughs
    “Anything that can be done chemically can be done by other means.”
  • Source Unknown
    Source Unknown
    “Everybody's youth is a dream, a form of chemical madness.”
  • James Dye
    James Dye
    “Doesn't make much sense to me to spray everything with chemicals when you're trying to clean.”

Usage

In literature:

Plants are the great chemical manufacturers in the world of life, and second to them come our human industrial and scientific chemists.
"More Science From an Easy Chair" by Sir E. Ray (Edwin Ray) Lankester
This disease may be occasioned by acrid or indigestible matters taken into the stomach, which may chemically or mechanically injure its interior coat.
"Zoonomia, Vol. II" by Erasmus Darwin
Just as elements combine chemically to form minerals, so do minerals combine mechanically, either loosely or compactly, to form rocks.
"The Economic Aspect of Geology" by C. K. Leith
The presence of preservatives can also only be detected by chemical analysis.
"The Home Medical Library, Volume V (of VI)" by Various
Cameras, Lenses, and all the necessary Photographic Apparatus and Chemicals, are supplied, tested, and guaranteed.
"Notes and Queries, Number 231, April 1, 1854" by Various
The first point to be cleared up was that of chemical composition.
"A Popular History of Astronomy During the Nineteenth Century" by Agnes M. (Agnes Mary) Clerke
I shall attempt stating the chemical problem furnished by the vesicles here in a mechanical form.
"The Cruise of the Betsey" by Hugh Miller
For a chemical brother spilt sulphuric acid over the first, and the second married a custom-house officer.
"Somehow Good" by William de Morgan
If chemical action can produce it, it will produce chemical action, as in the decomposition of water and electro-plating.
"The Machinery of the Universe" by Amos Emerson Dolbear
The electrolyte used in the battery is made by mixing chemically pure concentrated Sulphuric Acid with chemically pure water.
"The Automobile Storage Battery" by O. A. Witte
It was in or about the year 1807 that "chemical matches" were introduced to the public for the first time.
"The Story of a Tinder-box" by Charles Meymott Tidy
Since burning (oxidation) is simply a form of chemical change, it is not difficult to realize that chemical change releases energy.
"Common Science" by Carleton W. Washburne
Milk is a complete food, and, therefore, naturally it is not a simple chemical compound, but a mechanical mixture of a number of substances.
"The Bacillus of Long Life" by Loudon Douglas
The chemical may also be applied directly to the spot by means of a small brush.
"Book Repair and Restoration" by Mitchell Buck
Of course, knowledge of the physical and chemical properties is also of great importance whenever obtainable.
"A Brief Account of Radio-activity" by Francis Preston Venable
The air was heavy with many chemical odours, that of methylated spirit predominating.
"The Great Keinplatz Experiment and Other Tales of Twilight and the Unseen" by Sir Arthur Conan Doyle
Goods made include explosives, boots and shoes, chemicals, and leather.
"The New Gresham Encyclopedia. Vol. 1 Part 3" by Various
It cannot be definitely stated just how this rancidity takes place, any more than just what are the chemical products causing rancidity.
"Soap-Making Manual" by E. G. Thomssen
But man is unable to obtain nourishment directly from such crude chemical forms as he finds in the inorganic world.
"A Treatise on Physiology and Hygiene" by Joseph Chrisman Hutchison
Of the sources of electricity we have mentioned two: Friction, and Galvanism or chemical action.
"Electricity and Magnetism" by Elisha Gray
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In poetry:

You with your long academical
Causes for "thinning on top,"
Selling me gallons of chemical
Tonic, a brush, and a strop;
"Christmas Cards" by Franklin Pierce Adams
With skill that spares your toiling hands,
And chemic aid that science brings,
Reclaim the waste and outworn lands,
And reign thereon as kings
"The Homestead" by John Greenleaf Whittier
But let the wine be unfermented, Pale,
Of chemicals compounded, God knows how—
This were indeed the Prophet's Paradise,
O Paradise were Wilderness enow.
"The New Omar" by Gilbert Keith Chesterton
HOW is it that masters, and science, and art,
One spark of intelligence fail to impart,
Unless in that chemical union combined,
Of which the result, in one word, is a mind ?
"Accomplishment" by Jane Taylor
Boast, favour'd Media! boast thy flowery stores;
Thy thousand hues by chemic suns refined;
'Tis not the dress or mien my soul adores,
'Tis the rich beauties of Britannia's mind.
"Elegy XIV. Declining an Invitation To Visit Foreign Countries" by William Shenstone
"For thee my sylphs, with tender care, shall mark
The pointless pathway of the secret rills,
And light with lambent ray the caverns dark,
Where chemic nature mystic wealth distils.
"The Complaint Of The Goddess Of The Glaciers To Doctor Darwin" by Helen Maria Williams

In news:

From the Umatilla Chemical Agent Disposal Facility.
The Project Management Institute (PMI) named the Umatilla Chemical Agent Disposal Facility (UMCDF) the 2012 Project of the Year at its annual awards ceremony last weekend.
IFixit offers chemical analysis of the iPhone 5.
Police are investigating a chemical bomb threat near the CNN Center in Atlanta.
Adam Lee says that a caller claimed to have planted a chemical bomb at the center.
ATLANTA — Authorities say a caller mentioned possible chemicals being placed at the CNN Center in downtown Atlanta, prompting officers to close streets around the complex as they searched for a possible chemical bomb .
Authorities say a caller mentioned possible chemicals being placed at the CNN Center in downtown Atlanta, prompting officers to close streets around the complex as they searched for a possible chemical bomb .
Chemical bomb threat prompts street closures around CNN Center.
ATLANTA – Police closed streets and sidewalks around CNN Center in downtown Atlanta as they investigated a chemical bomb threat, but found no such device during a search of the complex.
Tire slasher caught, chemical bomb hits vehicle.
New chemical element discovered in Japan.
Clean-Coal Plant Turns Out Natural Gas And Chemicals.
With efforts to revamp the nation's chemical safety law stalled in Congress, the Obama administration's top environmental regulator vowed three years ago to act on her own to beef up the oversight of toxic substances.
Cheap natural gas feeds chemical industry boom.
The Society of Chemical Industry , America International Group, recently announced that David Weidman, chairman and CEO of Celanese Corp. Will receive the SCI Chemical Industry Medal.
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In science:

Being uniform in the star, these redshifted chemical imbalances are the ideal variables to quantify the departure from chemical equilibrium and follow its time evolution.
Rotochemical Heating of Neutron Stars: Rigorous Formalism with Electrostatic Potential Perturbations
Their formation and decomposition are first order phase transitions, not chemical reactions; they are not chemical compounds as the trapped molecules are not bonded to the lattice.
A CF3I-based SDD Prototype for Spin-independent Dark Matter Searches
Figure 5: (a) Chemical structure of polythiophene. (b) Schematic structural diagram of a positively-charged polaron on a polythiophene chain. (c) Chemical structure of soluble poly(3-alkylthienylenes) .
Route to Room-Temperature Superconductivity from a Practical Point of View
The chemical potential of dimers, µd , is defined through the relationship 2µ = ǫb + µd involving the molecular binding energy ǫb and the atomic chemical potential µ.
Theory of ultracold Fermi gases
One observes that for the combination of the pairs (m+ , m− ) considered above, only the equality, to an error of order 1/N , between two ‘partial chemical potentials’ is fixed; the relationships between these with the other two partial chemical potentials is undetermined.
On the Luttinger theorem concerning number of particles in the ground states of systems of interacting fermions
NAD take part in very many chemical reactions producing new substances either needed in the chemical mini-factory itself to produce other substances, or needed in some other function in the cell, or in fact both .
The Blind Watchmaker Network: Scale-freeness and Evolution
The chemical argument centers on the average major element chemical compositions of GEMS, which Min et al. claim are inconsistent with ISM grain abundances derived by fitting to as tronomical measurements.
Comment on "The shape and composition of interstellar silicate grains"
INTRODUCT ION Chemical structure retrieval systems are frequently presented with the task to produce a list of all stored chemical graphs containing a prescribed subgraph, .
On the Probability Distribution of Superimposed Random Codes
Finally, Ilgner and Nelson (2006) embedded a five-species chemical reaction network in an evolving α-disk model, fully coupling the chemical and dynamical evolution of the disk.
Ice Lines, Planetesimal Composition and Solid Surface Density in the Solar Nebula
Chemical Molecules Toxicity of chemical molecules can be predicted to some degree by comparing their three-dimensional structure.
Graph Kernels
This magnetic mechanism for propagating information, also agrees with Dyson’s (1999) suggestion that ‘physical reproduction’ preceded chemical replication in the origins of life, the latter being identified with a specific chemical copying process.
Magnetism, FeS colloids, and Origins of Life
So as in [FM] one can define the random empirical chemical potential and the annealed chemical potential λ0 (ρ).
Lattice gas model in random medium and open boundaries: hydrodynamic and relaxation to the steady state
Since the quarks we put in were massless, the only two scales are the chemical potential and the temperature and so large chemical potential can be equivalently viewed as low-temperature.
Chemical Potential in the Gravity Dual of a 2+1 Dimensional System
These are network media that include chemical gels , which are formed by the permanent random chemical bonding of small molecules, as well as rubber , which is formed via the introduction of permanent random chemical crosslinks between nearby monomers in melts or solutions of flexible long-chain polymers.
Soft random solids and their heterogeneous elasticity
The underlying assumption of the thermal model used to extract the (T ,µb) values is (chemical) equilibrium at chemical freeze-out. A natural question then is how is equilibrium achieved? The answer obviously cannot come from within the framework of the thermal model.
Charmonium from Statistical Hadronization of Heavy Quarks -- a Probe for Deconfinement in the Quark-Gluon Plasma
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