What is "chemistry"

Natural \Nat"u*ral\ (?; 135), a. [OE. naturel, F. naturel, fr. L. naturalis, fr. natura. See Nature.]

1. Fixed or determined by nature; pertaining to the constitution of a thing; belonging to native character; according to nature; essential; characteristic; innate; not artificial, foreign, assumed, put on, or acquired; as, the natural growth of animals or plants; the natural motion of a gravitating body; natural strength or disposition; the natural heat of the body; natural color.

   With strong natural sense, and rare force of will.
   --Macaulay.

2. Conformed to the order, laws, or actual facts, of nature; consonant to the methods of nature; according to the stated course of things, or in accordance with the laws which govern events, feelings, etc.; not exceptional or violent; legitimate; normal; regular; as, the natural consequence of crime; a natural death; anger is a natural response to insult.

   What can be more natural than the circumstances in the behavior of those women who had lost their husbands on this fatal day?
   --Addison.

3. Having to do with existing system to things; dealing with, or derived from, the creation, or the world of matter and mind, as known by man; within the scope of human reason or experience; not supernatural; as, a natural law; natural science; history, theology.

   I call that natural religion which men might know . . . by the mere principles of reason, improved by consideration and experience, without the help of revelation.
   --Bp. Wilkins.

4. Conformed to truth or reality; as:

   1. Springing from true sentiment; not artificial or exaggerated; -- said of action, delivery, etc.; as, a natural gesture, tone, etc.

   2. Resembling the object imitated; true to nature; according to the life; -- said of anything copied or imitated; as, a portrait is natural.

5. Having the character or sentiments properly belonging to one's position; not unnatural in feelings.

   To leave his wife, to leave his babes, . . . He wants the natural touch.
   --Shak.

6. Connected by the ties of consanguinity. especially, Related by birth rather than by adoption; as, one's natural mother. ``Natural friends.''
   --J. H. Newman.

7. Hence: Begotten without the sanction of law; born out of wedlock; illegitimate; bastard; as, a natural child.

8. Of or pertaining to the lower or animal nature, as contrasted with the higher or moral powers, or that which is spiritual; being in a state of nature; unregenerate.

   The natural man receiveth not the things of the Spirit of God.
   --1 Cor. ii. 14.

9. (Math.) Belonging to, to be taken in, or referred to, some system, in which the base is 1; -- said of certain functions or numbers; as, natural numbers, those commencing at 1; natural sines, cosines, etc., those taken in arcs whose radii are 1.

10. (Mus.)

    1. Produced by natural organs, as those of the human throat, in distinction from instrumental music.

    2. Of or pertaining to a key which has neither a flat nor a sharp for its signature, as the key of C major.

    3. Applied to an air or modulation of harmony which moves by easy and smooth transitions, digressing but little from the original key.

    4. Neither flat nor sharp; -- of a tone.

    5. Changed to the pitch which is neither flat nor sharp, by appending the sign [natural]; as, A natural.
       --Moore (Encyc. of Music).

11. Existing in nature or created by the forces of nature, in contrast to production by man; not made, manufactured, or processed by humans; as, a natural ruby; a natural bridge; natural fibers; a deposit of natural calcium sulfate. Opposed to artificial, man-made, manufactured, processed and synthetic. [WordNet sense 2]

12. Hence: Not processed or refined; in the same statre as that existing in nature; as, natural wood; natural foods.

    Natural day, the space of twenty-four hours.
    --Chaucer.

    Natural fats, Natural gas, etc. See under Fat, Gas. etc.

    Natural Harmony (Mus.), the harmony of the triad or common chord.

    Natural history, in its broadest sense, a history or description of nature as a whole, including the sciences of botany, zo["o]logy, geology, mineralogy, paleontology, chemistry, and physics. In recent usage the term is often restricted to the sciences of botany and zo["o]logy collectively, and sometimes to the science of zoology alone.

    Natural law, that instinctive sense of justice and of right and wrong, which is native in mankind, as distinguished from specifically revealed divine law, and formulated human law.

    Natural modulation (Mus.), transition from one key to its relative keys.

    Natural order. (Nat. Hist.) See under order.

    Natural person. (Law) See under person, n.

    Natural philosophy, originally, the study of nature in general; the natural sciences; in modern usage, that branch of physical science, commonly called physics, which treats of the phenomena and laws of matter and considers those effects only which are unaccompanied by any change of a chemical nature; -- contrasted with mental philosophy and moral philosophy.

    Natural scale (Mus.), a scale which is written without flats or sharps.

    Note: Model would be a preferable term, as less likely to mislead, the so-called artificial scales (scales represented by the use of flats and sharps) being equally natural with the so-called natural scale.

    Natural science, the study of objects and phenomena existing in nature, especially biology, chemistry, physics and their interdisciplinary related sciences; natural history, in its broadest sense; -- used especially in contradistinction to social science, mathematics, philosophy, mental science or moral science.

    Natural selection (Biol.), the operation of natural laws analogous, in their operation and results, to designed selection in breeding plants and animals, and resulting in the survival of the fittest; the elimination over time of species unable to compete in specific environments with other species more adapted to survival; -- the essential mechanism of evolution. The principle of natural selection is neutral with respect to the mechanism by which inheritable changes occur in organisms (most commonly thought to be due to mutation of genes and reorganization of genomes), but proposes that those forms which have become so modified as to be better adapted to the existing environment have tended to survive and leave similarly adapted descendants, while those less perfectly adapted have tended to die out through lack of fitness for the environment, thus resulting in the survival of the fittest. See Darwinism.

    Natural system (Bot. & Zo["o]l.), a classification based upon real affinities, as shown in the structure of all parts of the organisms, and by their embryology.

    It should be borne in mind that the natural system of botany is natural only in the constitution of its genera, tribes, orders, etc., and in its grand divisions.
    --Gray.

    Natural theology, or Natural religion, that part of theological science which treats of those evidences of the existence and attributes of the Supreme Being which are exhibited in nature; -- distinguished from revealed religion. See Quotation under Natural, a., 3.

    Natural vowel, the vowel sound heard in urn, furl, sir, her, etc.; -- so called as being uttered in the easiest open position of the mouth organs. See Neutral vowel, under Neutral and Guide to Pronunciation, [sect] 17.

    Syn: See Native.

c.1600, "alchemy," from chemist + -ry; also see chemical (adj.). The meaning "natural physical process" is 1640s, and the scientific study not so called until 1788. The figurative sense of "instinctual attraction or affinity" is attested slightly earlier, from the alchemical sense.

n. 1 (context uncountable English) The branch of natural science that deals with the composition and constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their molecules. 2 (context countable English) An application of chemical theory and method to a particular substance. 3 (context informal English) The mutual attraction between two people; rapport.

1. n. the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions [syn: chemical science]

2. the way two individuals relate to each other; "their chemistry was wrong from the beginning -- they hated each other"; "a mysterious alchemy brought them together" [syn: interpersonal chemistry, alchemy]

Chemistry (styled CHEMISTRY) was a Japanese pop duo, composed of and .

Chemistry is the third studio album by British all-female pop group Girls Aloud. It was released in the United Kingdom on 5 December 2005 by Polydor Records. After the success of What Will the Neighbours Say?, the album was again entirely produced by Brian Higgins and his production team Xenomania again. Chemistry is a loose concept album which details celebrity lifestyle and "what it's like to be a twentysomething girl in London." A number of the songs notably avoid the typical verse-chorus form of pop music, instead making use of unusual structures.

Chemistry was widely acclaimed by a number of contemporary music critics upon its release. Despite a relatively low chart position (peaking at 11, it is the lowest charting release by the group), the album yielded four top ten singles and was certified platinum in the United Kingdom and Ireland, selling over 390,000 copies. The album was followed by the Chemistry Tour, Girls Aloud's first concert tour to reach arenas.

Chemistry is a branch of physical science, and the study of the substances of which matter is composed.

Chemistry may also refer to:

Chemistry is a 2005 collaboration album by Buckshot of the Boot Camp Clik and 9th Wonder of Little Brother. 9th provides all the production on the release, and handled all recording and mixing except for the song "No Comparison" which was recorded by Khrysis, while leaving the rapping to Buckshot, with guest appearances from members of the Boot Camp Clik and the Justus League. This album is paralleled by the Black Moon album "Alter the Chemistry", which was basically a remix album produced by Da Beatminerz.

Chemistry is the second solo album by singer Johnny Gill.

Richard Harrington of the Washington Post wrote, "Gill is 18. He just sounds older. On his recent hit single "Half Crazy," Gill's husky, powerful baritone would lead to you to think he'd been around the love wars long enough to do some postgraduate work. But the cover photo for his "Chemistry" album and the "Half Crazy" video show a slightly built kid with a soft, innocent stare, looking like he just got out of high school. Which he has...For his new album he was teamed with veteran producer and songwriter Linda Creed, who had worked with Thom Bell on the Delfonics', Stylistics' and Spinners' recordings but dropped out of the business for five years to raise her family...That new combination, he feels, is going to put him that much closer to his dream: 'to sell 40 million copies like Michael and then get into the movies.' Luckily Gill's strengths as a ballad singer coincide with commercial radio's currently receptive attitude toward medium tempo, romantic material...But will the world go along with a ballad singer who's so young? 'That's what we've all got to find out very soon,' Gill says evenly. 'I know this one may not go gold. But I'm going to spray paint it.'"

--Excerpted from "The Ballads of Johnny Gill," Washington Post, June 22, 1985

Peter Judge wrote, "This is one of those albums that should have been bigger. Gill is only 18 but as far as singing he can hang with the big boys. Gill's rich tenor makes a song like "Half Crazy" a real gem. In a few years, watch out Luther Vandross."

--Excerpted from "Boss Rocked '85," The Rock Hill Herald, January 2, 1986

"Chemistry" is a song by the alternative rock band Semisonic. It was their first single on their 2001 album, All About Chemistry. It reached 39 on Billboard's Modern Rock Tracks and 35 on the UK Singles Chart. The song was featured in the film 40 Days and 40 Nights and in the TV series Men in Trees and Roswell.

Chemistry is a 2009 Malayalam film by Viji Thampi based on a true story about a high school student. The film was later dubbed into Tamil as Naan Gowri in 2012.

Chemistry is a Pakistani Urdu-Language drama serial that premiered on Geo Entertainment on 8 October 2010, directed by Syed Ahmad Kamran. The main cast includes Sanam Baloch, Faisal Rehman, Iffat Umar, Danish Taimoor and Asad Zaman. The drama's tag line reads 'Chemistry, subject of love'.

Chemistry was a comedy-drama series that debuted on Cinemax as a part of its Max After Dark lineup on August 19, 2011. It followed the affair of an attorney and a police officer, which began after the officer saved the attorney from a car wreck. The last episode aired on November 18, 2011.

"Chemistry" is the sixth episode of the American television series, Smash. The episode aired on March 12, 2012.

In the context of relationships, chemistry is a simple " emotion" that two people get when they share a special connection. It is not necessarily sexual. It is the impulse making one think "I need to see this [other] person again" - that feeling of "we click". It is very early in one's relationship that they can intuitively work out whether they have positive or negative chemistry.

Chemistry is a Telugu film directed by Vachespathy Jonnalagadda, starring Sri Ram Kodali and Amitha Rao. Uday Kumar was the producer and Vishwanath Ghantasala composed the music.

"Chemistry" is a song by Dutch recording artist Eva Simons, from her debut studio album, EVA-LUTION. It was released in the Netherlands on March 20, 2013. Although song did not achieve the same commercial and critical success as the earlier singles, it did climb to number 28 and spend 5 weeks on the Dutch Top 40 charts. The song was used in a Pepsi ad campaign in the Netherlands which gave customers a chance to meet Simons when she performed on Beyoncé's The Mrs. Carter Show World Tour.

Chemistry is the second mini album from South Korean duo Trouble Maker, which consists of 4Minute's HyunA and Beast's Hyunseung. It was released digitally on October 28, 2013 with the lead single "Now" (; lit. "No Tomorrow").