Best 313 quotes in «chemistry quotes» category

Mr Humphry Davy is a lively and talented man, and a thorough chemist...

My dear nephew was only in his sixth year when I came to be detached from the family circle. But this did not hinder John and I from remaining the most affectionate friends, and many a half or whole holiday he was allowed to spend with me, was dedicated to making experiments in chemistry, where generally all boxes, tops of tea-canisters, pepper-boxes, teacups, &c., served for the necessary vessels, and the sand-tub furnished the matter to be analysed. I only had to take care to exclude water, which would have produced havoc on my carpet.

My laboratory is interested in the related challenges of understanding the origin of life on the early earth, and constructing synthetic cellular life in the laboratory. Focusing on artificial life frees us to explore novel chemical systems, but what we learn from these systems helps us to understand possible pathways leading to the origin of life. Our basic design for a synthetic cell involves the encapsulation of a spontaneously replicating nucleic acid, which acts as the genetic material, within a spontaneously replicating membrane vesicle, which provides spatial localization. We are using chemical synthesis to make nucleic acids with modified nucleobases and sugar-phosphate backbones.

My mother showed me that when tin or zinc was bent it uttered a special ‘cry’. ‘It’s due to deformation of the crystal structure,’ she said, forgetting that I was five, and could not understand her - and yet her words fascinated me, made me want to know more.

Nernst was a great admirer of Shakespeare, and it is said that in a conference concerned with naming units after appropriate persons, he proposed that the unit of rate of liquid flow should be called the falstaff.

Not one of them [formulae] can be shown to have any existence, so that the formula of one of the simplest of organic bodies is confused by the introduction of unexplained symbols for imaginary differences in the mode of combination of its elements... It would be just as reasonable to describe an oak tree as composed of blocks and chips and shavings to which it may be reduced by the hatchet, as by Dr Kolbe's formula to describe acetic acid as containing the products which may be obtained from it by destructive influences. A Kolbe botanist would say that half the chips are united with some of the blocks by the force parenthesis; the other half joined to this group in a different way, described by a buckle; shavings stuck on to these in a third manner, comma; and finally, a compound of shavings and blocks united together by a fourth force, juxtaposition, is joined to the main body by a fifth force, full stop.

No matter how great the initial chemistry is, if your values are on two different pages, the odds of your marriage working decrease significantly.

Once a molecule is asymmetric, its extension proceeds also in an asymmetrical sense. This concept completely eliminates the difference between natural and artificial synthesis. The advance of science has removed the last chemical hiding place for the once so highly esteemed vis vitalis.

Okay, so I shouldn't have fucked with her on the introduction thing. Writing nothing except, Saturday night. You and me. Driving lessons and hot sex ... in her notebook probably wasn't the smartest move. But I was itching to make Little Miss Perfecta stumble in her introduction of me. And stumbling she is. "Miss Ellis?" I watch in amusement as Perfection herself looks up at Peterson. Oh, she's good. This partner of mine knows how to hide her true emotions, something I recognize because I do it all the time. "Yes?" Brittany says, tilting her head and smiling like a beauty queen. I wonder if that smile has ever gotten her out of a speeding ticket. "It's your turn. Introduce Alex to the class." I lean an elbow on the lab table, waiting for an introduction she has to either make up or fess up she knows less than crap about me. She glances at my comfortable position and I can tell from her deer-in-the-headlights look I've stumped her. "This is Alejandro Fuentes," she starts, her voice hitching the slightest bit. My temper flares at the mention of my given name, but I keep a cool facade as she continues with a made-up introduction. "When he wasn't hanging out on street corners and harassing innocent people this summer, he toured the inside of jails around the city, if you know what I mean. And he has a secret desire nobody would ever guess." The room suddenly becomes quiet. Even Peterson straightens to attention. Hell, even I'm listening like the words coming out of Brittany's lying, pink-frosted lips are gospel. "His secret desire," she continues, "is to go to college and become a chemistry teacher, like you, Mrs. Peterson." Yeah, right. I look over at my friend Isa, who seems amused that a white girl isn't afraid of giving me smack in front of the entire class. Brittany flashes me a triumphant smile, thinking she's won this round. Guess again, gringa. I sit up in my chair while the class remains silent. "This is Brittany Ellis," I say, all eyes now focused on me. "This summer she went to the mall, bought new clothes so she could expand her wardrobe, and spent her daddy's money on plastic surgery to enhance her, ahem, assets." It might not be what she wrote, but it's probably close enough to the truth. Unlike her introduction of me. Chuckles come from mis cuates in the back of the class, and Brittany is as stiff as a board beside me, as if my words hurt her precious ego. Brittany Ellis is used to people fawning all over her and she could use a little wake-up call. I'm actually doing her a favor. Little does she know I'm not finished with her intro. "Her secret desire," I add, getting the same reaction as she did during her introduction, "is to date a Mexicano before she graduates." As expected, my words are met by comments and low whistles from the back of the room. "Way to go, Fuentes," my friend Lucky barks out. "I'll date you, mamacita, " another says. I give a high five to another Latino Blood named Marcus sitting behind me just as I catch Isa shaking her head as if I did something wrong. What? I'm just having a little fun with a rich girl from the north side. Brittany's gaze shifts from Colin to me. I take one look at Colin and with my eyes tell him game on. Colin's face instantly turns bright red, resembling a chile pepper. I have definitely invaded his territory.

One of my friends compared me to Bruce Banner, due to my work with radiation and human health. So I looked up Bruce Banner and this is what I found: Banner, a physicist, is sarcastic and seemingly very self-assured when he first appears in Incredible Hulk #1, but is also emotionally withdrawn in most fashions...Banner is considered one of the greatest scientific minds on Earth, possessing "a mind so brilliant it cannot be measured on any known intelligence test." He holds expertise in biology, chemistry, engineering, physiology, and nuclear physics.

One is almost tempted to say... at last I can almost see a bond. But that will never be, for a bond does not really exist at all: it is a most convenient fiction which, as we have seen, is convenient both to experimental and theoretical chemists.

People used to recognize it as mood. Science has revealed it as cannabinoids. When you feel sad, just do long running. Then you will know that even mood can be governed.

Patience is the blue vitriol to control the fungal emotions of life

On Titan the molecules that have been raining down like manna from heaven for the last 4 billion years might still be there largely unaltered deep-frozen awaiting the chemists from Earth

O woman, thou art my imperfection!

People have wracked their brains for an explanation of benzene and how the celebrated man, August Kekulé, managed to come up with the concept of the benzene theory. With regard to the last point especially, a friend of mine who is a farmer and has a lively interest in chemistry has asked me a question which I would like to share with you. My 'agricultural friend' apparently believes he has traced the origins of the benzene theory. 'Has Kekulé,' so ran the question, 'once been a bee-keeper? You certainly know that bees too build hexagons; they know well that they can store the greatest amount of honey that way with the least amount of wax. I always liked it,' my agricultural friend went on, 'When I received a new issue of the Berichte; admittedly, I don't read the articles, but I like the pictures very much. The patterns of benzene, naphthalene and especially anthracene are indeed wonderful. When I look at the pictures I always have to think of the honeycombs of my bee hives.

Perfume can be good . . . especially if you get one that goes with your chemistry." - Adrian Ivashkov

Pussy is everywhere. Dick is everywhere. Chemistry isn't.

[photography]... wanted to understand, to master for myself, all the processes involved, and to manipulate them in my own way.

Planck...and Bohr...have invented systems containing electrons of which the motion produces no effect upon external charges...[N]ot only [is this] inconsistent with the accepted laws of electromagnetism, but I may add, is logically objectionable, for that state of motion which produces no physical effect whatsoever may better be called a state of rest.

{Recalling Professor Ira Remsen's remarks (1895) to a group of his graduate students about to go out with their degrees into the world beyond the university:} He talked to us for an hour on what was ahead of us; cautioned us against giving up the desire to push ahead by continued study and work. He warned us against allowing our present accomplishments to be the high spot in our lives. He urged us not to wait for a brilliant idea before beginning independent research, and emphasized the fact the Lavoisier's first contribution to chemistry was the analysis of a sample of gypsum. He told us that the fields in which the great masters had worked were still fruitful; the ground had only been scratched and the gleaner could be sure of ample reward.

Sharing certain important core values is one of the key factors that determine the chemistry of a relationship/partnership.

Science began with a gadget and a trick. The gadget was the wheel; the trick was fire. We have come a long way from the two-wheel cart to the round-the-world transport plane, or from the sparking flint to man-made nuclear fission. Yet I wonder whether the inhabitants of Hiroshima were more aware of the evolution of science than ancient man facing an on-storming battle chariot. It isn't physics that will make this a better life, nor chemistry, nor sociology. Physics may be used to atom-bomb a nation and chemistry may be used to poison a city and sociology has been used to drive people and classes against classes. Science is only an instrument, no more than a stick or fire or water that can be used to lean on or light or refresh, and also can be used to flail or burn or drown. Knowledge without morals is a beast on the loose.

Several billion trillion tons of superhot exploding hydrogen nuclei rose slowly above the horizon and managed to look small, cold and slightly damp.

So how do you do it? Not make a baby, balance an equation. I did biology last year.

So what if we have chemistry. Chemistry doesn't miraculously turn bad boys into good ones.

Some subjects mixed well with weed, but Chemistry wasn’t one of them.

Sorry for the delay," Vogel said. "I was required to make a bomb.

The chemists are a strange class of mortals, impelled by an almost insane impulse to seek their pleasures amid smoke and vapour, soot and flame, poisons and poverty; yet among all these evils I seem to live so sweetly that may I die if I were to change places with the Persian king.

The capital ... shall form a fund, the interest of which shall be distributed annually as prizes to those persons who shall have rendered humanity the best services during the past year. ... One-fifth to the person having made the most important discovery or invention in the science of physics, one-fifth to the person who has made the most eminent discovery or improvement in chemistry, one-fifth to the one having made the most important discovery with regard to physiology or medicine, one-fifth to the person who has produced the most distinguished idealistic work of literature, and one-fifth to the person who has worked the most or best for advancing the fraternization of all nations and for abolishing or diminishing the standing armies as well as for the forming or propagation of committees of peace.

That the nobility of Man, acquired in a hundred centuries of trial and error, lay in making himself the conquerer of matter, and that I had enrolled in chemistry because I wanted to maintain faithful to that nobility. That conquering matter is to understand it, and understanding matter is necessary to understanding the universe and ourselves: and that therefore Mendeleev’s Periodic Table, which just during those weeks we were laboriously learning to unravel, was poetry, loftier and more solemn than all the poetry we had swallowed doen in liceo; and come to think of it, it even rhymed! … [T]he chemistry and physics on which we fed, besides being in themselves nourishments vital in themselves, were the antidotes to Fascism … because they were clear and distinct and verifiable at every step, and not a tissue of lies and emptiness like the radio and newspapers.

The chemists who uphold dualism are far from being agreed among themselves; nevertheless, all of them in maintaining their opinion, rely upon the phenomena of chemical reactions. For a long time the uncertainty of this method has been pointed out: it has been shown repeatedly, that the atoms put into movement during a reaction take at that time a new arrangement, and that it is impossible to deduce the old arrangement from the new one. It is as if, in the middle of a game of chess, after the disarrangement of all the pieces, one of the players should wish, from the inspection of the new place occupied by each piece, to determine that which it originally occupied.

The first rule of chem lab is to never heat a closed system or it will explode.

The discovery of an interaction among the four hemes made it obvious that they must be touching, but in science what is obvious is not necessarily true. When the structure of hemoglobin was finally solved, the hemes were found to lie in isolated pockets on the surface of the subunits. Without contact between them how could one of them sense whether the others had combined with oxygen? And how could as heterogeneous a collection of chemical agents as protons, chloride ions, carbon dioxide, and diphosphoglycerate influence the oxygen equilibrium curve in a similar way? It did not seem plausible that any of them could bind directly to the hemes or that all of them could bind at any other common site, although there again it turned out we were wrong. To add to the mystery, none of these agents affected the oxygen equilibrium of myoglobin or of isolated subunits of hemoglobin. We now know that all the cooperative effects disappear if the hemoglobin molecule is merely split in half, but this vital clue was missed. Like Agatha Christie, Nature kept it to the last to make the story more exciting. There are two ways out of an impasse in science: to experiment or to think. By temperament, perhaps, I experimented, whereas Jacques Monod thought.

The dogma of the impossibility of determining the atomic constitution of substances, which until recently was advocated with such fervor by the most able chemists, is beginning to be abandoned and forgotten; and one can predict that the day is not far in the future when a sufficient collection of facts will permit determination of the internal architecture of molecules. A series of experiments directed toward such a goal is the object of this paper.

The human mind adjusts itself to a certain point of view, and those who have regarded nature from one angle, during a portion of their life, can adopt new ideas only with difficulty.

The Kiss. It seemed like more than a kiss. It felt more like alchemy.

There are moments in our lives when we meet someone and we feel as if we have known them all our lives. It seems astounding really to know that you can understand each other so well. It feels fascinating when you find out that even if you both are meeting for the first time, there is already an amazing chemistry happening between you two! And what is captivating is the depth to which you already know each other; almost like you both know each other inside out. When you both look into each other's eyes, you both already know what is going on in each other's minds. As if words are not required at all to understand the thoughts, feelings, and emotions of the other person. It feels as if you both know each other from centuries ago in time! It feels absolutely exhilarating when you do find this person in your life. And then your life becomes totally awesome and amazing.

THE MAXIMS OF MEDICINE Before you examine the body of a patient, Be patient to learn his story. For once you learn his story, You will also come to know His body. Before you diagnose any sickness, Make sure there is no sickness in the mind or heart. For the emotions in a man’s moon or sun, Can point to the sickness in Any one of his other parts. Before you treat a man with a condition, Know that not all cures can heal all people. For the chemistry that works on one patient, May not work for the next, Because even medicine has its own Conditions. Before asserting a prognosis on any patient, Always be objective and never subjective. For telling a man that he will win the treasure of life, But then later discovering that he will lose, Will harm him more than by telling him That he may lose, But then he wins. THE MAXIMS OF MEDICINE by Suzy Kassem

The name explains the structure: carbon, hydrogen, and oxygen bond into a ring-shaped structure called a cresol (also found in creosote), and phosphorus hangs on to the ring like an exhausted swimmer gripping a life preserver.

The optimist sees the glass half full. The pessimist sees the glass half empty. The chemist sees the glass completely full, half in liquid state and half gaseous, both of which are probably poisonous.

[The] structural theory is of extreme simplicity. It assumes that the molecule is held together by links between one atom and the next: that every kind of atom can form a definite small number of such links: that these can be single, double or triple: that the groups may take up any position possible by rotation round the line of a single but not round that of a double link: finally that with all the elements of the first short period [of the periodic table], and with many others as well, the angles between the valencies are approximately those formed by joining the centre of a regular tetrahedron to its angular points. No assumption whatever is made as to the mechanism of the linkage. Through the whole development of organic chemistry this theory has always proved capable of providing a different structure for every different compound that can be isolated. Among the hundreds of thousands of known substances, there are never more isomeric forms than the theory permits.

There was something ghost-like and insubstantial about gases to these early chemists. They called liquids that turned into gases easily, "spirits." Methyl alcohol, they called "wood spirit"; ethyl alcohol, "wine spirit." Even today, alcoholic beverages are frequently referred to as "spirits." (Modern Arabs, from whose language the word "alcohol" was taken, call ethyl alcohol "spirit" from the English. This is a queer exchange.)

This irrelevance of molecular arrangements for macroscopic results has given rise to the tendency to confine physics and chemistry to the study of homogeneous systems as well as homogeneous classes. In statistical mechanics a great deal of labor is in fact spent on showing that homogeneous systems and homogeneous classes are closely related and to a considerable extent interchangeable concepts of theoretical analysis (Gibbs theory). Naturally, this is not an accident. The methods of physics and chemistry are ideally suited for dealing with homogeneous classes with their interchangeable components. But experience shows that the objects of biology are radically inhomogeneous both as systems (structurally) and as classes (generically). Therefore, the method of biology and, consequently, its results will differ widely from the method and results of physical science.

The uniformity of the earth's life, more astonishing than its diversity, is accountable by the high probability that we derived, originally, from some single cell, fertilized in a bolt of lightning as the earth cooled. It is from the progeny of this parent cell that we take our looks; we still share genes around, and the resemblance of the enzymes of grasses to those of whales is a family resemblance.

This isn't just chemistry. It's the whole periodic table." ~Cain

This is one experiment guaranteed to produce unexpected fireballs from time to time. Expect them.

This [discovery of a cell-free yeast extract] will make him famous, even though he has no talent for chemistry. {Comment on German scientist Eduard Buchner who later ironically won a Nobel Prize in Chemistry for this discovery}

Understand something. Fall back from the old times and ways of doing things. Chemistry is deeper than the feels.

Today chemists can artificially make hundreds of thousands of organic compounds, most of which are not duplicated in nature.