Reaction Quotes (8)

Sed tamen salis petrae. VI. Part V. NOV. CORVLI. ET V. sulphuris, et sic facies toniitrum et coruscationem: sic facies artificium.
But, however, of saltpetre take six parts, live of young willow (charcoal), and five of sulphur, and so you will make thunder and lightning, and so you will turn the trick.
Bacon's recipe for Gunpowder, partly expressed as an anagram in the original Latin.
Roger Bacon's Letter Concerning the Marvelous Power of Art and of Nature and Concerning the Nullity of Magic, trans. T. L. Davis (1922), 48.
See also:  |  Gunpowder (3)

And by the influence of heat, light, and electrical powers, there is a constant series of changes [in animal and vegetal substances]; matter assumes new forms, the destruction of one order of beings tends to the conservation of another, solution and consolidation, decay and renovation, are connected, and whilst the parts of the system, continue in a state of fluctuation and change, the order and harmony of the whole remain unalterable.
The Elements of Agricultural Chemistry (1813), in J. Davy (ed.) The Collected Works of Sir Humphry Davy(1839-40), Vol 7, 182.
See also:  |  Change (7)  |  Electricity (12)  |  Heat (10)  |  Light (11)  |  Matter (29)

In deriving a body from the water type I intend to express that to this body, considered as an oxide, there corresponds a chloride, a bromide, a sulphide, a nitride, etc., susceptible of double compositions, or resulting from double decompositions, analogous to those presented by hydrochloric acid, hydrobromic acid, sulphuretted hydrogen, ammonia etc., or which give rise to the same compounds. The type is thus the unit of comparison for all the bodies which, like it, are susceptible of similar changes or result from similar changes.
Traité de Chimie Organique, 1856, 4, 587. Trans. J. R. Partington, A History of Chemistry, (1970), Vol. 4, 456.
See also:  |  Compound (9)

It is, I believe, justifiable to make the generalization that anything an organic chemist can synthesize can be made without him. All he does is increase the probability that given reactions will 'go.' So it is quite reasonable to assume that given sufficient time and proper conditions, nucleotides, amino acids, proteins, and nucleic acids will arise by reactions that, though less probable, are as inevitable as those by which the organic chemist fulfills his predictions. So why not self-duplicating virus-like systems capable of further evolution?
The Place of Genetics in Modern Biology (1959),18.
See also:  |  Amino Acid (2)  |  DNA (23)  |  Evolution (125)  |  Protein (10)  |  Synthesis (4)

The blood corpuscles take up the atmospheric oxygen in the lungs, and the vital chemical process accordingly depends essentially on the combination of oxygen absorbed by blood corpuscles with the combustible constituents of the blood to form carbonic acid and water.
Quoted in Joseph Stewart Fruton Proteins, Enzymes, Genes: The Interplay of Chemistry and Biology (1999), 240.
See also:  |  Biochemistry (17)  |  Blood (16)

The excessive increase of anything causes a reaction in the opposite direction.
Plato
The Republic
See also:  |  Opposite (4)

Their specific effect on the glucosides might thus be explained by assuming that the intimate contact between the molecules necessary for the release of the chemical reaction is possible only with similar geometrical configurations. To give an illustration I will say that enzyme and glucoside must fit together like lock and key in order to be able to exercise a chemical action on each other. This concept has undoubtedly gained in probability and value for stereochemical research, after the phenomenon itself was transferred from the biological to the purely chemical field. It is an extension of the theory of asymmetry without being a direct consequence of it: for the conviction that the geometrical structure of the molecule even for optical isomers exercises such a great influence on the chemical affinities, in my opinion could only be gained by new actual observations.
'Einfluss der Configuration auf die wirkung der Enzyme', Berichte der deutschen Chemischen Gesellschaft, 1894, 27, 2985-93. Trans. B. Holmstedt and G. Liljestrand (eds.) Readings in Pharmacology (1963), 251.
See also:  |  Enzyme (4)  |  Isomer (2)  |  Observation (84)  |  Stereochemistry (2)

There is one experiment which I always like to try, because it proves something whichever way it goes. A solution of iodine in water is shaken with bone-black, filtered and tested with starch paste. If the colorless solution does not turn the starch blue, the experiment shows how completely charcoal extracts iodine from aqueous solution. If the starch turns blue, the experiment shows that the solution, though apparently colorless, still contains iodine which can be detected by means of a sensitive starch test.
Applied Colloid Chemistry (1921), 111.
See also:  |  Experiment (111)  |  Iodine (3)

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Original words on great scientific discoveries.
Darwin considers pros and cons of marriage.
James Clerk Maxwell's electric but poetic Valentine.
I have little patience with scientists who take a board of wood, look for its thinnest part and drill a great number of holes where drilling is easy. --Albert Einstein
I try to identify myself with the atoms...I ask what I would do if I were a carbon atom or a sodium atom. --Linus Pauling




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