Nyob hauv chemistry, ib lub ntsiab yog ib yam khoom ntshiab uas muaj cov atoms uas txhua tus muaj tib tus lej ntawm protons hauv lawv cov nuclei. Tsis zoo li cov tshuaj sib xyaw ua ke, cov khoom siv tshuaj tsis tuaj yeem tawg ua cov tshuaj yooj yim los ntawm cov tshuaj tiv thaiv tshuaj.
Ib yam yooj yim txhais yog dab tsi?
element. [ĕl′ə-mənt] Ib yam khoom uas tsis tuaj yeem tawg mus rau hauv cov khoom yooj yim los ntawm cov tshuaj txhais tau tiasIb lub ntsiab yog tsim los ntawm cov atoms uas muaj tib tus lej atomic, uas yog, txhua lub atom muaj cov tib tus naj npawb ntawm protons hauv nws cov nucleus li tag nrho lwm cov atoms ntawm lub caij.
Yam piv txwv yog dab tsi?
Ib yam tshuaj yog hais txog cov khoom ntshiab ntawm ib hom atom. … Piv txwv li, carbon yog ib yam khoom uas muaj cov atoms uas muaj tib tus naj npawb ntawm protons, piv txwv li 6. Cov piv txwv ntawm cov ntsiab lus yog hlau, tooj liab, nyiaj, kub, hydrogen, carbon, nitrogen, thiab oxygen.
Cov ntsiab lus yooj yim yog dab tsi?
Ib lub ntsiab yog ib yam khoom uas tsis tuaj yeem tawg mus rau lwm yam khoomMuaj txog 100 lub ntsiab lus, txhua tus muaj nws hom atom. Txhua yam hauv lub qab ntuj khwb muaj cov atom ntawm yam tsawg ib los yog ntau lub ntsiab. Daim ntawv teev sijhawm teev tag nrho cov ntsiab lus paub, ua ke ua ke nrog cov khoom zoo sib xws.
Chemists txhais li cas thaum lawv tham txog cov ntsiab?
"Ib yam khoom (lossis lub ntsiab) yog ib feem ntawm cov teeb meem ua los ntawm ib hom atom." "Lub ntsiab yog ib yam khoom ua los ntawm ib hom atoms." "Cov khoom tsim los ntawm ib hom atoms raug faib ua cov khoom. "
