Best 313 quotes in «chemistry quotes» category

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    It is, of course, extremely toxic, but that’s the least of the problem. It is hypergolic with every known fuel, and so rapidly hypergolic that no ignition delay has ever been measured. It is also hypergolic with such things as cloth, wood, and test engineers, not to mention asbestos, sand, and water-with which it reacts explosively. It can be kept in some of the ordinary structural metals-steel, copper, aluminium, etc.-because of the formation of a thin film of insoluble metal fluoride which protects the bulk of the metal, just as the invisible coat of oxide on aluminium keeps it from burning up in the atmosphere. If, however, this coat is melted or scrubbed off, and has no chance to reform, the operator is confronted with the problem of coping with a metal-fluorine fire. For dealing with this situation, I have always recommended a good pair of running shoes.

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    It's the in-between, the sustenance, not just the gears and bolts that make a human. When you forget to find out how the person was built—the oil, chemistry, and the craft—you miss all the beauty.

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    I took a glass retort, capable of containing eight ounces of water, and distilled fuming spirit of nitre according to the usual method. In the beginning the acid passed over red, then it became colourless, and lastly again all red: no sooner did this happen, then I took away the receiver; and tied to the mouth of the retort a bladder emptied of air, which I had moistened in its inside with milk of lime lac calcis, (i.e. lime-water, containing more quicklime than water can dissolve) to prevent its being corroded by the acid. Then I continued the distillation, and the bladder gradually expanded. Here-upon I left every thing to cool, tied up the bladder, and took it off from the mouth of the retort.— I filled a ten-ounce glass with this air and put a small burning candle into it; when immediately the candle burnt with a large flame, of so vivid a light that it dazzled the eyes. I mixed one part of this air with three parts of air, wherein fire would not burn; and this mixture afforded air, in every respect familiar to the common sort. Since this air is absolutely necessary for the generation of fire, and makes about one-third of our common air, I shall henceforth, for shortness sake call it empyreal air, [literally fire-air] the air which is unserviceable for the fiery phenomenon, and which makes abut two-thirds of common air, I shall for the future call foul air [literally corrupted air].

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    It's weird I don't know anything about you," "What are you talking about? We just spent the whole day together." "Yes, but we drank loads and chatted about - I don't even know what we chatted about," "I like conversations like that," Tom said. "Much less hard work. with my ex, it was like pulling teeth sometimes. We had loads in common but we didn't see the world the same way." He stopped. "Oh, that sounds good. I should write it down." He got out his phone. "You're writing that down?" "Yep" Tom said, fiddling with his phone She stared at him, trying not to laugh. "Wow. You are weird, do you know that," she said. "Most of the time you're almost normal, but occasionally your super-weird side comes out.

    • chemistry quotes
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    It was the colors that had initially attracted her, the vibrant blue of the Bunsen flame and the dusty red of copper and the deep violet of permanganate. It was the logic of balanced equations, the certainty that when element A mixed with element B, compound C would appear. It was like predicting the future; it was like magic. Most of all, it was being: of having to be so careful with the hydrochloric acid, of accidentally burning herself while lighting a match, of discovering.

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    it is urgent that my chemical alter ego, so in love with digressions, get back on the rails, which is that of fornicating with matter in order to support myself

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    It would not be out of order to remark here that a chemist's work is never done. Those choosing it asa profession ought to know at the outset that most of their lives will be spent washing up.

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    I wasn’t aware of just how close he’d moved to me until now. So many details came into focus. The shape of his lips, the line of his neck. “I’m not dangerous,” I breathed. He brought his face toward mine. “You are to me.” And somehow, against all reason, we were kissing. I closed my eyes, and the world around me faded. The noise, the smoke . . . it was gone. All that mattered was the taste of his mouth, a mix of cloves and mints. There was a fierceness in his kiss, a desperation . . . and I answered, just as hungry for him. I didn’t stop him when he pulled me closer, so that I almost sat on his lap. I’d never been wrapped around someone’s body like that, and I was shocked at how eagerly mine responded. His arm went around my waist, pulling me onto him further, and his other hand slid up the back of my neck, getting entangled in my hair. He took his lips away from my mouth, gently trailing kisses down to my neck. I tipped my head back, gasping when the intensity returned to his mouth. There was an animalistic quality that sent shock waves through the rest of my body.

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    I was hoping to be able to get into the Queen's Chamber while I was in Egypt in 1986 to get a sample of the salt for analysis. I had speculated that the salt on the walls of the chamber was an unwanted, though significant, residual substance caused by a chemical reaction where hot hydrogen reacted with the limestone. Unfortunately, I was unable to get into the chamber because a French team was already inside the Horizontal Passage, boring holes into what they hoped were additional chambers. (It was discovered, after I left Egypt, that the spaces contained only sand.) As it turned out, my research would have been redundant. Noone reported in his book that another individual had already had the same idea and done the work. In 1978, Dr. Patrick Flanagan asked the Arizona Bureau of Geology and Mineral Technology to analyze a sample of this salt. They found it to be a mixture of calcium carbonate (limestone), sodium chloride (halite or salt), and calcium sulfate (gypsum, also known as plaster of paris). These are precisely the minerals that would be produced by the reaction of hot, hydrogen-bearing gas with the limestone walls and ceiling of the Queen's Chamber. [...] The interior chambers of the Great Pyramid have the appearance of being subjected to extreme temperatures; and [...] the broken corner on the granite box shows signs of being melted, rather than simply being chipped away.

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    It was the first time! Just because there weren’t fireworks the first time doesn’t mean there will never be fireworks. We’re human; we’re adults; we teach each other; we communicate; fireworks don’t just go off, wham-bang; fireworks evolve!’ Awestruck by the utter, asinine nonsense of this metaphor, everyone is still. Into the stillness, the ample woman drops the word ‘Wrong.’ Then she says it again. ‘Wrong…I’m talking about science…Pheromones.’ The woman turns to Cornelia. ‘The chemicals in his body call out. The chemicals in your body answer. It either happens or it doesn’t.’ On top of being dumb, Cornelia is dumbfounded.

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    Mapenzi, kama ilivyo kwa vitu vyote hapa ulimwenguni, hayawezi kuwepo bila kujumuishwa na fizikia na kemia yake! Bila kemia hakuna mapenzi ya kudumu. Tamaa ya ngono kimsingi huanza pindi unapokutana na mtu. Tamaa hiyo huweza kukua na kuwa kitu kingine kadiri muda unavyokwenda lakini chanzo kinakuwepo toka siku ya kwanza mlipokutana. Kemikali inayosababisha tamaa ya ngono na hata kuikuza tamaa hiyo ni 'phenyl ethylamine' ('fino itholamine') au PEA ambayo ni kemikali ya mapenzi ndani ya ubongo. Husisimua watu na huongeza nguvu za kimwili (fizikia) na kihisia (kemia). Tamaa husababisha mtu azalishe PEA nyingi zaidi, kitu kinachosababisha kujisikia kizunguzungu (cha hisia za kimapenzi) na dalili zingine kama magoti kutetemeka, jasho kutoka viganjani na kutokutulia. Kemikali hii inapozalishwa kwa kiwango kikubwa, hutuma alamu ('signals') kutoka kwenye ubongo mpaka kwenye viungo vingine vya mwili na kutumika kama 'dopamine' au 'amphetamine' ambazo ni kemikali za ulevi ndani ya ubongo. Iwapo unajiuliza kwa nini wewe au mtu mwingine unavutiwa na mtu ambaye hamwendani kimapenzi, inaweza kuwa ni kwa sababu una kiwango kikubwa cha kemikali hizo kuliko mwenzako, kitu ambacho huzidi uwezo wa kutumia kichwa na kutoa maamuzi bora kulingana na akili ya kuzaliwa. Kwa jumla, mapenzi yote ya kweli uhitaji angalau kiwango kidogo cha PEA kwa wale wanaopendana. Cha msingi kukumbuka ni kwamba kemikali hizi huja kwa vituo, nikiwa simaanishi kwamba tamaa ya ngono hupotea pale mtu anapoelekea kwenye uhusiano wa kudumu. Lakini mambo hubadilika. Hatuwezi kuvumilia zile hisia kali kadiri tunavyozidi kusafiri kuelekea kwenye uhusiano wa kudumu na kwenye maisha ya pamoja yenye furaha. Katika uhusiano wenye afya hata hivyo matatizo hutokea hapa na pale. Chanzo cha Murphy na Debbie kupendana kilikuwa kemia zaidi kuliko fizikia. Kama hakuna kemia hakuna mapenzi.

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

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    I woan let you go back to that boy--not until you give me one bec doux." A sweet kiss. Then he reached forward, unlacing the ribbon from my hair. "What are you doing?" I murmured. "Souvenir." He put it in his pocket, and for some reason that struck me as the sexiest thing I'd ever seen.

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    Look here, I have succeeded at last in fetching some gold from the sun. {After his banker questioned the value of investigating gold in the Fraunhofer lines of the sun and Kirchhoff handing him over a medal he was awarded for his investigations.}

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    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.

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    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.

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    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.

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    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.

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    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.

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

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    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.

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    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.

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    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.

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    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

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    O woman, thou art my imperfection!

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

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    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.

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    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.

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    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.

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

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

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

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    {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.

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

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    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.

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

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

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    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.

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

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

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    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.

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    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.

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    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.

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    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.

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

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    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.

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    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.

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

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    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

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