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Mathematics The atoms of different elements are combined, in various proportions to form compounds. The amount of chemicals that go into the formation of the compounds should be defined as a "cooking recipe" that to succeed, we must respect the proportions. It says, in other words, the Law of Definite Proportions: the formation of a given compound, its constituents are combined always in the same mass ratio, regardless of the source or method of preparation of the compound. Thus, to obtain water in a laboratory, we combine hydrogen and oxygen whenever the same ratio, i.e. the ratio of two hydrogen atoms to an oxygen atom. Or, the amount of hydrogen must be twice the amount of oxygen, and there may be more or less. DEBATE Have you ever thought about what the formula of water H O, is? Based on what has been described above, reflect on what the formula is water and discuss with your class. We could play the "mad scientist" or an alchemist and make the most varied combinations of substances in an attempt to discover new compounds, how to turn all metals into gold; invent the "formula" of love, the "formula" of happiness, the " formula "of youth, the" formula "of immortality, etc.. However, through the Science Mathematics, Chemistry and with the help of technology, we know that not all combinations are possible in a laboratory and do not occur in nature. Did you know that certain combinations of amino acids make up the genetic code responsible for our life? Have you noticed in children traits that resemble their parents? Or people from the same family with certain types of diseases? Why is that?
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Matematika Atomi različitih elemenata su u kombinaciji, u različitim omjerima u obliku spojeva. Količina kemikalija koje idu u formiranju spojeva treba biti definiran kao "kuhanje recept" kako bi uspjeli, moramo poštivati proporcije. On kaže, u drugim riječima, zakon je definitivno proporcijama: formiranje određenog spoja, njegovi sastojci su u kombinaciji uvijek u istom omjeru mase, neovisno o izvoru ili načinu pripreme spoja. Dakle, da dobiju vodu u laboratoriju, kombiniramo vodik i kisik kad je isti omjer, tj. omjer dva atoma vodika do atoma kisika. Ili, u iznosu od vodika mora biti dvostruko količina kisika, a mogu biti više ili manje. DEBATA Jeste li ikada razmišljali o tome što formula vode H O, je? Na temelju onoga što je gore opisano, odražavaju se na ono što je formula vode i razgovarati sa svojim klase. Mogli smo igrati "ludi znanstvenik" ili alkemičar i napraviti najraznovrsnije kombinacije tvari u pokušaju otkrivanja novih spojeva, kako pretvoriti sve metale u zlato; izumiti "formulu" o ljubavi, "formula" za srećom, " Formula "mladih," formula "besmrtnosti, itd.. Međutim, kroz znanost matematiku, kemiju, a uz pomoć tehnologije, znamo da nije sve kombinacije su moguće u laboratoriju, a ne pojavljuju u prirodi. Jeste li znali da određene kombinacije aminokiselina čine genetski kod zadužen za našeg života? Jeste li primijetili u dječjim osobine koje sliče njihovi roditelji? Ili ljudi iz iste obitelji s određenim vrstama bolesti? Zašto je to tako?