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In conclusion the author writes (reports, states, stresses, thinks, notes, considers, believes, analyses, points out, says, describes) that… / draws reader’s attention to...
The author comes to the conclusion that…
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5. Your opinion. I found the article (rather) interesting (important, useful) as / because… I think / In my opinion the article is (rather) interesting (important, useful) as / because… I found the article too hard to understand / rather boring as / because…
CARBON AND COMPOUNDS OF CARBON Organic chemistry is an extremely interesting field of natural science and of great technological significance. The overwhelming majority of chemists prove to be engaged in producing organic comp7\4z454x11c5e0n,lounds; several millions being known so far.
In view of their obvious success in the manufacture of synthetic compounds, the chemists are greatly interested in this field of science. The name organic chemistry, which was originally used to refer to the chemistry of substances that occur in living organisms, is now used for the chemistry of the compounds of carbon. The chemistry of carbon was greatly advanced about a century ago through the development of a general structure theory, this theory being a chemical theory, induced from chemical facts.
In recent years it has received added verification through the determination of exact structures of molecules and crystals by physical methods, especially X-ray diffraction, electron diffraction, and the analysis of the spectra of substances.
During the first half of the 19th century many organic compounds were found to have been obtained from plants and animals and also to have been made in the laboratory. The were analyzed for their constituent elements, an their properties were carefully studied. Efforts were made to find some correlation between the chemical composition and the properties of the substances.
