Qhov sib txawv ntawm cov cim tshuaj thiab cov tshuaj formula yog tias peb siv cov cim tshuaj rau npe rau qee yam tshuaj uas muaj cov tshuaj formula yog siv los sau npe tshuaj lom neeg.
Cov cim tshuaj yog cov lej rau cov khoom siv tshuaj. Cov khoom siv tshuaj yog hom tshuaj uas suav nrog cov atoms uas muaj tib tus lej atomic (tib tus naj npawb ntawm protons hauv atomic nucleus). Ib qho tshuaj formula qhia cov tshuaj muaj nyob rau hauv ib qho tshuaj lom neeg thiab tseem, qhov sib piv ntawm cov khoom no.
Yam cim tshuaj yog dab tsi?
Cov cim tshuaj yog ib txoj cai uas txheeb xyuas qee yam tshuaj lom neeg. Txhua yam tshuaj sib txawv muaj ib lub cim tshwj xeeb uas qhia txog lub caij. Tsis tas li ntawd, peb tuaj yeem muab cov cim tshuaj rau qee pawg ua haujlwm ib yam nkaus. Piv txwv li, "Kuv" yog lub cim rau ib pawg methyl, thiab "ph" yog lub cim rau ib pawg phenyl. Daim ntawv teev cov ntsiab lus qhia tag nrho cov cim tshuaj uas peb siv rau cov ntsiab lus. Muaj cov subscripts thiab superscripts txuas rau txhua lub cim uas muab tus lej atomic (superscript) thiab cov lej loj (subscript) ntawm txhua lub caij.
Daim duab 01: Lub Sij Hawm Lub Sijhawm
Yog ib lub caij muaj isotopes (atoms ntawm tib lub caij muaj tib tus lej atomic tab sis cov lej sib txawv), peb tuaj yeem txheeb xyuas lawv tsuas yog saib cov lej loj, tsis yog lub cim lossis tus lej atomic vim tias lub cim thiab tus lej atomic yog tib yam rau isotopes. Cov lus hauv qab no qhia cov cim tshuaj rau txhua yam tshuaj.
Cov tshuaj tshuaj yog dab tsi?
Tshuaj formula yog cov mis uas qhia cov tshuaj muaj nyob hauv cov tshuaj sib xyaw thiab qhov sib piv ntawm txhua lub caij. Cov qauv tshuaj muaj xws li cov cim tshuaj, cov lej thiab qee zaum lwm cov cim xws li dashes, brackets, thiab lwm yam. Nws tsis yog lub npe ntawm cov khoom sib xyaw. Yog li ntawd, nws tsis muaj lus. Ntxiv mus, nws tsis qhia cov qauv tshuaj ntawm cov compound.
Ntxiv rau, peb tsis tuaj yeem txiav txim siab hom tshuaj tiv thaiv uas muaj nyob nruab nrab ntawm cov atoms ntawm cov molecule. Cov mis mos molecular qhia qhov sib piv ntawm cov atoms thaum cov mis empirical qhia qhov tsawg tshaj plaws ntawm cov atoms. Piv txwv li, chemical formula rau qabzib yog C6H12O6, thiab cov qauv qhia pom yog CH2O. Qee zaum peb siv cov qauv tshuaj los qhia cations thiab anions. Nyob ntawd, peb yuav tsum siv cov cim ntxiv (+) rau cations thiab cim rho (-) rau anions. Piv txwv li: sulfate ions yog denoted los ntawm [SO42-
Dab tsi yog qhov txawv ntawm Chemical Cymbol thiab Chemical Formula?
Ib lub cim tshuaj yog tus lej uas txheeb xyuas qee yam tshuaj lom neeg. Qhov no koom nrog qee lwm cov cim xws li tus lej atomic thiab cov lej loj. Cov tshuaj formula yog cov mis uas qhia tau hais tias cov tshuaj muaj nyob rau hauv ib tug chemical compound thiab qhov ratios ntawm txhua lub caij. Qhov no koom nrog lwm cov cim xws li dashes, brackets, ntxiv thiab rho tawm cov cim, thiab lwm yam. Qhov no yog qhov txawv ntawm cov cim tshuaj thiab cov tshuaj formula.
Summary – Chemical Symbol vs Chemical Formula
Peb siv cov cim hauv chemistry. Qhov ntawd yog txhawm rau txheeb xyuas cov tshuaj thiab cov khoom sib txawv. Peb siv cov qauv tshuaj los txheeb xyuas cov ntsiab lus ntawm cov khoom sib xyaw. Qhov sib txawv ntawm cov cim tshuaj thiab cov tshuaj formula yog tias peb siv cov cim tshuaj rau npe rau qee yam tshuaj uas yog siv cov tshuaj formula siv rau npe tshuaj lom neeg.
