chemistry

[chem·is·try]

Chemistry is the science that tells us what things and people are made of; for example, that water is really H2O, two atoms of hydrogen and one of oxygen.

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That branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms. These atoms are not assumed to be indivisible, but merely the finest grade of subdivision hitherto attained. Chemistry deals with the changes in the composition and constitution of molecules. See Atom, Molecule.

Noun
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

Noun
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"

n.
That branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms. These atoms are not assumed to be indivisible, but merely the finest grade of subdivision hitherto attained. Chemistry deals with the changes in the composition and constitution of molecules. See Atom, Molecule.

n.
An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo.

n.
A treatise on chemistry.

Chemistry

Chem"is*try , n. [From Chemist. See Alchemy.] 1. That branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms. These atoms are not assumed to be indivisible, but merely the finest grade of subdivision hitherto attained. Chemistry deals with the changes in the composition and constitution of molecules. See Atom, Molecule. &hand; Historically, chemistry is an outgrowth of alchemy (or alchemistry), with which it was anciently identified. 2. An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo. 3. A treatise on chemistry. &hand; This word and its derivatives were formerly written with y, and sometimes with i, instead of e, in the first syllable, chymistry, chymist, chymical, etc., or chimistry, chimist, chimical, etc.; and the pronunciation was conformed to the orthography. Inorganic chemistry, that which treats of inorganic or mineral substances. -- Organic chemistry, that which treats of the substances which from the structure of organized beings and their products, whether animal or vegetable; -- called also chemistry of the carbon compounds. There is no fundamental difference between organic and inorganic chemistry. -- Physiological chemistry, the chemistry of the organs and tissues of the body, and of the various physiological processes incident to life. -- Practical chemistry, or Applied chemistry, that which treats of the modes of manufacturing the products of chemistry that are useful in the arts, of their applications to economical purposes, and of the conditions essential to their best use. -- Pure chemistry, the consideration of the facts and theories of chemistry in their purely scientific relations, without necessary reference to their practical applications or mere utility.

That branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms. These atoms are not assumed to be indivisible, but merely the finest grade of subdivision hitherto attained. Chemistry deals with the changes in the composition and constitution of molecules. See Atom, Molecule.

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Usage Examples

Modern bodybuilding is ritual, religion, sport, art, and science, awash in Western chemistry and mathematics. Defying nature, it surpasses it.

Dad was a chemistry professor at Saint Olaf College in Minnesota, then Oxford College in Minnesota, and a very active member of the American Chemical Society education committee, where he sat on the committee with Linus Pauling, who had authored a very phenomenally important textbook of chemistry.

Just as the science and art of agriculture depend upon chemistry and botany, so the art of education depends upon physiology and psychology.

I love Alton Brown's show 'Good Eats,' about the chemistry of food. It's really thoughtful.

If the chemistry is right between star and photographer and the geometry of the pictures pleases the star, often the two people end up with a long-term professional friendship during which they continue to work together and to produce highly personal images.

Chemistry can be a good and bad thing. Chemistry is good when you make love with it. Chemistry is bad when you make crack with it.

Dancing and running shake up the chemistry of happiness.

Misspelled Form

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Other Usage Examples

Chemistry is not anything an executive producer or writer can orchestrate or plan you just hope for it.

I don't know if I believe in love at first sight, but of course I believe in two people having chemistry right away. A girl should be really easy to talk to. When I lose track of time because we've been talking, I think that's really fun.

Chemistry itself knows altogether too well that - given the real fear that the scarcity of global resources and energy might threaten the unity of mankind - chemistry is in a position to make a contribution towards securing a true peace on earth.

Creatively, I thought we were still viable and could do more records. But our working relationship just wasn't happening at all, and our chemistry as people broke down because of that.

I really enjoyed hanging out with some of the teachers. This one chemistry teacher, she liked hanging out. I liked making explosives. We would stay after school and blow things up.

I am a teacher, and I am proud of it. At Cornell University I have taught primarily undergraduates, and indeed almost every year since 1966 have taught first-year general chemistry.

In 1948 I entered the Massachusetts Institute of Technology, undecided between studies of chemistry and physics, but my first year convinced me that physics was more interesting to me.