Video: Yuav ua li cas Molecular qauv tsim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Organic molecules tau yuav piav los ntawm cov qauv molecular ,qu yog tsim los ntawm kev sib txuas cov atoms ua ke nrog cov naj npawb ntawm cov tshuaj chemical. Muaj pes tsawg daim ntawv cog lus yuav tsum raug txiav txim los ntawm qhov sib thooj ob-dimensional Lewis qauv ntawm lub molecule.
Ntawm no, dab tsi yog cov khoom siv molecular?
Qhov no molecular qauv teeb yog qhov zoo tagnrho rau cov tub ntxhais kawm chemistry uas kawm txog molecules ! Cov kit muaj txaus "atoms," sawv cev los ntawm 2 cm txoj kab uas hla ntoo pob, ua kom loj molecules . (Saib hauv phau ntawv chemistry rau cov tswv yim ntawm dab tsi molecules tsim.)
Qhov thib ob, cov qauv molecular zoo li cov molecules tiag tiag li cas? Teb: Molecular qauv yeej ua los piav molecules txwv tsis pub peb saib tsis tau molecules nrog qhov muag liab qab. Molecules yog microscopic chaw tsuas yog tuaj yeem pom nrog lub tshuab tsom. Yog li, ua kom lawv pom cov kws tshawb fawb ua rau lawv qauv uas zoo li tus tiag cov.
Ntxiv mus, lub hom phiaj ntawm kev siv cov qauv molecular yog dab tsi?
Cov lub hom phiaj ntawm kev siv a qauv molecular yog muab cov tub ntxhais kawm nrog kev pab cuam qhov muag kom pom cov ntsiab lus sib txawv hauv chemistry thiab dhau los ua cov neeg kawm nquag.
Vim li cas carbon thiaj muaj 4 qhov?
Vim yog C atom ua tau tsim covalent bonds rau ntau npaum li plaub Lwm cov atoms, nws yog qhov tsim nyog los tsim cov pob txha pob txha, lossis "qaum qaum," ntawm macromolecule. A carbon atom ua tau daim ntawv cog lus nrog plaub lwm atoms thiab yog zoo li cov plaub - qhov log, thaum lub atom oxygen, uas ua tau daim ntawv cog lus tsuas yog ob, yog zoo li ob- qhov lub log.
Pom zoo:
Yuav ua li cas koj tsim ib daim qauv ntawm lub kaum sab xis nrog lub compass?
Yuav Ua Li Cas Luam Ib Lub Taub Hau Siv Compass Kos kab ua haujlwm, l, nrog point B rau nws. Qhib koj lub compass rau ib lub vojvoog r, thiab constructarc (A, r) sib tshuam ob sab ntawm lub kaum sab xis A ntawm cov ntsiab lus Sand T. Tsim arc (B, r) kev sib tshuam kab l ntawm qee qhov chawV. Tsim arc (S, ST). Tsim arc (V, ST) kev sib tshuam arc (B, r) atpointW
Tus qauv ntsuas kub thiab siab yog dab tsi Vim li cas tus qauv tsim nyog?
Cov txheej txheem siv cov txheej txheem yog qhov tseem ceeb rau kev qhia txog cov kua dej ntws thiab qhov ntim ntawm cov kua thiab cov pa roj, uas yog nyob ntawm qhov kub thiab txias. STP feem ntau yog siv thaum cov txheej txheem hauv xeev raug siv rau kev suav
Yuav ua li cas koj tsim ib tug atomic qauv?
Atoms muaj peb yam tseem ceeb: protons, electrons, thiab neutrons. Lub nucleus (center) ntawm lub atom muaj cov protons (zoo them) thiab cov neutrons (tsis muaj nqi). Cov cheeb tsam sab nraud ntawm lub atom yog hu ua electron shells thiab muaj cov electrons (tsis zoo them)
Tus qauv qauv yog dab tsi Qhov txawv ntawm tus qauv qauv thiab tus qauv molecular yog dab tsi?
Cov mis mos molecular siv cov cim tshuaj thiab cov ntawv sau npe los qhia cov naj npawb ntawm cov atoms sib txawv hauv cov molecule lossis compound. Ib qho empirical formula muab qhov yooj yim tshaj plaws, tag nrho tus lej piv ntawm atoms hauv ib qho chaw. Cov qauv qauv qhia txog kev sib koom ua ke ntawm cov atoms hauv cov molecule
Yuav ua li cas koj pom tus qauv enthalpy ntawm tsim los ntawm combustion?
Tus qauv enthalpy ntawm cov tshuaj tiv thaiv (Δ Horxn) tuaj yeem xam los ntawm cov lej ntawm cov qauv enthalpies ntawm kev tsim cov khoom (txhua qhov sib npaug los ntawm nws cov stoichiometric coefficient) rho tawm cov lej ntawm cov qauv enthalpies ntawm kev tsim cov reactants (txhua qhov sib npaug los ntawm nws. stoichiometric coefficient) - "cov khoom