Video: Yuav ua li cas yog qhov ci kab spectra tsim los ntawm atoms?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nws yog ua los ntawm cov electrons hauv cov ntsiab lus atoms dhia mus rau qis zog xeev tom qab raug tsoo upward los ntawm kev sib tsoo nrog lwm tus atom los yog ib qho photon los yog electron los yog dab tsi. Raws li lawv ua li ntawd, lawv tso lawv lub zog ntxiv los ntawm kev xa tawm photons, feem ntau yog ib qho photon ib qho kev hloov pauv.
Tsis tas li ntawd, qhov ci kab spectra yog dab tsi?
Kev txhais ntawm kaj - kab spectrum :ib emission spectrum suav nrog qaim kab tawm tsam qhov tsaus ntuj.
Tom qab, lo lus nug yog, dab tsi ua rau tsim cov kab spectral? Thaum cov electrons txav los ntawm qib siab zog mus rau qis dua, photons raug tso tawm, thiab cov kab hluav taws xob tuaj yeem pom hauv spectrum . Kev nqus kab pom thaum electrons nqus photons thiab txav mus rau qib siab zog. Ib tug atom nyob rau hauv nws qis zog theem yog nyob rau hauv lub hauv av xeev.
Tsuas yog li ntawd, kab spectrum qhia peb li cas txog tus qauv ntawm atom?
Cov kab spectrum ntawm ib atom los yog molecule yog yam ntxwv thiab tshwj xeeb rau cov atom / molecule. Yog li, lub xub ntiag ntawm ib tug muab kab spectrum yog ib qho pov thawj tseeb tias qhov sib thooj atom / molecule muaj nyob rau hauv qhov chaw.
Dab tsi yog 4 kab ci ntsa iab?
Cov plaub kab ci ntsa iab yog: Qab Zib, Hmoov, Zaub Mov, thiab Ntau. Kab Kab Kev noj zaub mov zoo heev thiab siv txoj kev ywj pheej tawm tsam kev sib haum xeeb. Peb txais yuav tus qauv kev quav tshuaj, vim rau ntau tus neeg, noj txawm tias me me ntawm cov khoom noj ntxiv tsis ua rau qhov kev ntshaw ploj mus-nws ua rau nws hnyav dua.
Pom zoo:
Yuav ua li cas yog ib qho atomic emission spectra txawv ntawm ib tug nruam spectra?
Nruam spectrum: ib qho spectrum uas muaj tag nrho cov wavelengths uas tsis muaj qhov sib txawv ntawm ntau yam. Emission spectrum: Thaum lub electron nyob rau hauv lub xeev zoo siab tsiv mus rau qis zog theem, nws emits ib tug npaum li cas ntawm lub zog li photons. Lub spectrum rau qhov kev hloov no muaj cov kab vim hais tias cov qib zog yog quantized
Nws puas yuav ua rau pom qhov sib npaug ntawm kab sib npaug mus rau ib kab thiab los ntawm ib qho taw tes ntawm kab?
Qhov sib npaug ntawm ib kab uas yog parallel lossis perpendicular rau ib kab? Cov lus teb tau: Cov nqes hav ntawm cov kab sib npaug sib npaug. Hloov txoj kab nqes paub thiab cov kev sib koom ua ke ntawm ib qho taw tes ntawm lwm txoj kab rau hauv daim ntawv point-slope kom pom qhov sib npaug ntawm kab sib npaug
Qhov kev sib npaug twg yog qhov tsim nyog los suav cov cua sov uas tsim los ntawm HCl NaOH cov tshuaj tiv thaiv?
Xam cov naj npawb ntawm moles ntawm lub hauv paus koj ntxiv los txiav txim siab molar tshav kub ntawm qhov nruab nrab, qhia siv qhov sib npaug Δ H = Q ÷ n, qhov twg 'n' yog tus naj npawb ntawm moles. Piv txwv li, xav tias koj ntxiv 25 mL ntawm 1.0 M NaOH rau koj HCl los ua kom muaj cua sov ntawm nruab nrab ntawm 447.78 Joules
Puas yog atoms ua los ntawm cov ntsiab lus los yog cov khoom tsim tawm ntawm atoms?
Atoms yeej ib txwm ua los ntawm cov khoom. Atoms qee zaum ua los ntawm cov khoom. Lawv txhua tus muaj ob tsab ntawv hauv lawv cov cim atomic. Cov muaj pes tsawg leeg
Yuav ua li cas muaj pes tsawg tus tooj liab atoms koj yuav tsum tau kab ntawm ib sab los tsim ib kab 1'm ntev?
Los ntawm kev sib piv, lub ntiaj teb cov pej xeem tsuas yog hais txog 7? 109 neeg. Yog tias koj tuaj yeem ua kab 100,000,000 tooj liab atoms ib sab, lawv yuav tsim ib txoj kab ntev li 1 cm