http___livro-ensino-medio.f1cf.com.br_quimica_hr_chemistry-31.html_1.xml
1.1 2.1 3.1 4.1 5.1 6.1 7.1 8.1 9.1 10.1 11.1 12.1 13.1 14.1 15.1 16.1 17.1
Chemistry Each substance when heated emits light of a different color. This color is characteristic for each substance, which makes this test useful in the recognition of unknown substances. Did you know that fireworks are explosive mixtures with certain salts, which produce light in color characteristics? The light emission on burning metal salts can be explained by the emission of photons when excited electrons in the metal (i.e., that won energy and thus came to an energy level higher than the fundamental) return to their ground state (in this return, emit photons of energy corresponding to that which won to move to the excited state). And in the case of the Rutherford model, will the electrons spinning around the nucleus would fall to lose energy in the nucleus? What do you think? Why do atoms emit light of different colors? The answer to these questions made the Rutherford atomic model was overcome. The nature of light, until the early nineteenth century prevailed, would have corpuscular light proposed by Isaac Newton, English physicist, who considered light as a bundle of small particles emitted by a light source that reached the eye stimulating vision. However, in the mid-nineteenth century, James Clerck Maxwell proposed a theory that unified understanding of electric and magnetic phenomena (theory of electromagnetism). One consequence of this theory is that the light has come to be regarded as an electromagnetic wave and its speed does not depend on the observer. In the early twentieth century, with the work of Max Planck and Albert Einstein, the light also became corpuscular interpreted (as energy packets). The energy of these "power packs" (photons) is directly proportional to its frequency of oscillation. In the mid-1920s, Louis Victor de Broglie, based on the work of Einstein proposed that electrons (which have very small mass) exhibit both wavelike properties as corpuscular (depending on the phenomenon behave as a wave or as a particle). This is known as wave-particle duality, and duality raw energy and naturally applies to the photon (which is considered a massless particle) and the base of quantum mechanics and quantum model of the atom, which is well accepted today.
1.1 2.1 3.1 4.1 5.1 6.1 7.1 8.1 9.1 10.1 11.1 12.1 13.1 14.1 15.1 16.1 17.1
Kemija Svaka tvar kad se zagrijava emitira svjetlost različitih boja. Ova boja je karakteristična za svaku tvar koja čini ovaj test korisna u prepoznavanju nepoznate tvari. Jeste li znali da su vatrometi eksplozivne smjese s određenim soli, koji proizvode svjetlo u boji obilježja? Svjetlo emisije na gori metalne soli mogu se objasniti emisije fotona kad je uzbuđen elektroni u metalu (npr., da je pobijedio energiju i tako došao do energije razini višoj od temeljnih) povratak u svoje osnovno stanje (u ovom povratku, emitiraju fotone energije odgovarajuće onome koje je osvojio za prelazak na pobuđenom stanju). I u slučaju Rutherford modela, će se elektroni vrti oko jezgre pasti gubiti energiju u jezgri? Što mislite? Zašto se atomi emitiraju svjetlost različitih boja? Odgovor na ova pitanja je Rutherford atomska model prevladati. Priroda svjetlosti, dok se početkom devetnaestog stoljeća prevladavala, bi korpuskularni svjetlo koje predlaže Isaac Newton, engleski fizičar, koji je smatrao svjetlo kao paket malih čestica koje emitira izvor svjetla, koja je dosegla oko poticanje vizija. Međutim, sredinom devetnaestog stoljeća, James Maxwell Clerck iznio je teoriju da je jedinstven razumijevanje električnih i magnetskih pojava (teorija elektromagnetizma). Jedna od posljedica ove teorije je da svjetlo je došao da se smatra elektromagnetskog vala, a njegova brzina ne ovisi o promatraču. Početkom dvadesetog stoljeća, s radom Maxa Plancka i Alberta Einsteina, svjetlo također postala korpuskularni tumačiti (kao energetskim paketima). Energija tih "paketa" energetskih (fotoni) izravno je razmjerna frekvenciji oscilacija. U mid-1920s, Louis Victor de Broglie, temelji se na radu Einstein je predložio da elektrona (koja imaju vrlo malu masu) pokazuju obje wavelike svojstva kao korpuskularnom (ovisno o fenomenu ponašaju kao val ili kao čestica). To je poznato kao val-čestica dualnost, i dualne sirovom energijom i, naravno, vrijedi i za fotona (koja se smatra massless čestica) i baza kvantne mehanike i kvantne model atoma, koji je dobro prihvaćen danas.