Cov txheej txheem:
Video: Yuav ua li cas koj nrhiav tau cov lus compound?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum ob lus siv ua ke los ua ib lub ntsiab lus tshiab, a compound yog tsim. Cov lus sib xyaw tuaj yeem sau ua peb txoj hauv kev: raws li qhib tshuaj sib xyaw (Spelled li ob lus , e.g., ice cream), kaw tshuaj sib xyaw (sib koom ua ib leeg lus , e.g., doorknob), los yog hyphenated tshuaj sib xyaw (ob tug lus koom nrog ib tug hyphen, piv txwv li, mus sij hawm ntev).
Hauv qhov no, lo lus piv txwv yog dab tsi?
Cov lus sib xyaw raug tsim thaum ob lossis ntau dua lus tau koom ua ke los tsim ib qho tshiab lus uas muaj lub ntsiab lus tshiab nkaus. Rau piv txwv , "hnub" thiab "paj" yog ob qho sib txawv lus , tab sis thaum fused ua ke, lawv tsim lwm tus lus , paj noob hlis.
hmo no puas yog lus sib xyaw? Hmo no yog ib 7 tsab ntawv lus , siv raws li ib tug noun los yog ib tug adverb, a lus sib , nrog cov lus Askiv qub, thiab muaj cov ntawv ghinott (ghinot). A lus sib , hmo no muaj ntau tshaj ib lus hauv nws. Muaj 2 lus uas yog rau, thiab hmo ntuj.
Yog li ntawd, muaj pes tsawg lo lus sib xyaw muaj?
Muaj peb hom lus sib xyaw: kaw daim ntawv, qhib daim ntawv, thiab hyphenated. Kaw cov lus sib xyaw ua ke yog tsim thaum ob lub siab ywj pheej, cov lus tshwj xeeb tau ua ke los tsim cov lus tshiab. Cov no yog cov feem ntau hom lus compound.
Dab tsi yog 5 piv txwv ntawm kev sib txuas?
Piv txwv ntawm Compounds:
- Dej - qauv: H2O = Hydrogen2 + Oxygen.
- Hydrogen Peroxide - Cov roj formula: H2O2 = Hydrogen2 + Oxygen2
- Ntsev - Formula: NaCl = Sodium + Chlorine.
- Baking Soda - Formula: NaHCO3 = Sodium + Hydrogen + Carbon + Oxygen3
- Octane - Formula: C8H18 = Carbon8 + Hydrogen18
Pom zoo:
Yuav ua li cas koj nrhiav tau daim ntawv tivthaiv ntawm ob lub ntsiab lus?
Muab ob lub ntsiab lus vectors nrog ib qho sawv cev rau qhov pib taw tes thiab lwm qhov sawv cev rau lub davhlau ya nyob twg taw tes. Daim ntawv tivthaiv ntawm vector tsim los ntawm ob lub ntsiab lus vectors yog muab los ntawm cov khoom ntawm lub davhlau ya nyob twg taw tes rho tawm cov khoom sib txuas ntawm qhov pib taw tes
Yuav ua li cas koj thiaj nrhiav tau cov lej ntawm cov lej lej lossis cov lej geometric?
Cov mis rau qhov suav ntawm n cov ntsiab lus ntawm geometric ib ntus yog muab los ntawm Sn = a[(r^n - 1)/(r - 1)], qhov twg a yog thawj lub sij hawm, n yog lub sij hawm tus lej thiab r yog tus qhov piv txwv
Yuav ua li cas koj nrhiav tau tus naj npawb ntawm covalent bonds nyob rau hauv ib tug compound?
Tus naj npawb ntawm daim ntawv cog lus rau ib qho atom nruab nrab yog sib npaug rau cov xov tooj ntawm cov hluav taws xob hauv lub plhaub valence tag nrho (2 los yog 8 electrons) rho tawm cov valence electrons. Txoj kev no ua haujlwm vim tias txhua daim ntawv cog lus sib cog lus uas ib qho atom tsim ntxiv lwm lub tshuab hluav taws xob rau lub atoms valence plhaub yam tsis hloov nws cov nqi
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog
Henri Becquerel nrhiav tau dab tsi uas ua rau nws tau txais 1903 Nobel nqi zog Nws nrhiav tau dab tsi txog lub caij uranium?
Teb: Henri Becquerel tau txais ib nrab ntawm qhov khoom plig rau nws qhov kev tshawb pom ntawm cov hluav taws xob tsis zoo. Teb: Marie Curie tau kawm txog cov hluav taws xob ntawm tag nrho cov tebchaw uas muaj cov xov tooj cua paub, suav nrog uranium thiab thorium, uas nws tom qab pom kuj tseem muaj xov tooj cua