Heterogeneous Sib tov

Zoo Siab

• Piv txwv ntawm kev sib xyaw heterogeneous
• Cov txheej txheem rau kev sib cais sib xyaw

Hauv chemistry, asib tov hais txog cov koom ua ke ntawm yam tsawg ob yam tshuaj, hauv qhov sib txawv ntawm qhov sib txawv, yam tsis muaj kev sib xyaw ntawm qib tshuaj. Qhov no txhais tau tias txhua yam ntawm cov tshuaj uas tsim cov khoom sib xyaw ua rau lawv lub peev xwm tag nrho.

Hauv qhov sib xyaw, ob qhov sib txawv tuaj yeem txheeb xyuas, uas yog cov hauv qab no:

• Homogeneous sib tov: Hauv hom kev sib xyaw no nws ua tiav nyuaj heev los txheeb xyuas cov ntsiab lus yog dab tsi uas sau lawv. Ua li no, tib neeg tsuas tuaj yeem txheeb xyuas ib qib ntawm lub cev nkaus xwb. Hauv cov kua ua homogeneous, hu ua "kev daws teeb meem", cov kuab tshuaj ntawm cov kuab tshuaj tau qhia. Thaum cov kuab tshuaj nyob hauv qhov tsawg thiab yuav luag ib txwm ua kua, cov kuab tshuaj feem ntau muaj feem sib luag. Xws li cawv, npias, gelatin, dej thiab cawv.
• Heterogeneous sib tov: Tsis zoo li cov sib xyaw sib xyaw ua ke, hauv cov no nws yog qhov yooj yim heev los txheeb xyuas, txawm tias nrog qhov muag liab qab, qhov sib txawv sib txawv uas ua rau lawv zoo li cas. Qhov no ua rau nws yooj yim dua los cais cov sib xyaw no tib lub sijhawm. Piv txwv li dej thiab roj, dej thiab xuab zeb.

Piv txwv ntawm kev sib xyaw heterogeneous

• Ntau hauv: Homogeneous thiab Heterogeneous Mixtures

Cov txheej txheem rau kev sib cais sib xyaw

Sij hawm dhau los, cov txheej txheem sib txawv tau tsim los cais cov khoom sib xyaw uas tsim cov khoom sib xyaw.

Ib txhia ntawm lawv yog:

• Sifting: Qhov no yog siv rau cov khoom sib xyaw uas muaj nyob hauv daim ntawv ntawm cov nplej. Dab tsi ua tiav yog kom hla lawv los ntawm ib lossis ntau tus sieves, raws li qhov tsim nyog. Txoj hauv kev no, thaum ib qho tseem nyob ntawm sab cib, qhov seem ntog.
• Sib nqus sib cais (los yog magnetization): Cov txheej txheem no muaj tsawg heev vim nws tsuas tuaj yeem siv rau hauv cov khoom sib xyaw uas qee qhov ntawm nws cov khoom muaj cov khoom sib nqus. Yog li cov no tau ntes los ntawm qee cov hlau nplaum.
• Pom: Thaum koj xav cais cov sib xyaw uas muaj cov dej tsis haum thiab kua, koj tuaj yeem xaiv qhov kev xaiv no, uas suav nrog siv lub raj xa dej ua los ntawm cov ntawv lim sab hauv. Yog li, cov ntsiab lus uas dhau los ntawm lub raj cua yuav raug cais los ntawm cov uas tau khaws cia hauv nws.

• Crystallization thiab nag lossis daus: Hauv cov txheej txheem no qhov kub ntawm qhov sib tov tau nce thiab yog li nws muaj peev xwm mloog zoo nws, tom qab ntawd lim nws thiab muab tso rau hauv lub crystallizer, qhov uas nws sab laug kom so kom txog thaum cov kua evaporates. Thaum qhov no tshwm sim, cov khoom ruaj tau khaws cia, hauv daim ntawv ntawm cov muaju, ntawm cov crystallizer. Raws li pom tau, qhov no yog cov txheej txheem tsim nyog los cais cov sib xyaw uas tsim los ntawm cov khoom hnyav uas tau yaj hauv cov kuab tshuaj.
• Decantation: Txhawm rau cais cov kua uas muaj qhov sib txawv sib txawv, cov txheej txheem no tau siv, uas muaj cov kab sib cais sib cais uas qhov sib xyaw kom sib cais tau muab tso rau. Tom qab cia nws zaum ib pliag, qhov tuab tshaj plaws yuav nyob hauv qab. Dab tsi ua tiav yog qhib lub kais ntawm cov sib cais sib cais, kom txog thaum tag nrho cov khoom ntawm qhov ntom ntom ntom ntog ntau dua, thaum seem tseem nyob hauv lub raj mis.
• Distillation: Thaum kawg, cov txheej txheem no suav nrog kev sib tov sib xyaw kom sib cais, muab tias nws muaj cov kua sib txawv uas sib tov sib xyaw. Dab tsi tshwm sim yog tias cov kua sib txawv xav tau qhov kub sib txawv, uas tso cai rau lawv cov pa nqus mus rau hauv cov raj kuaj, thaum lawv tawm mus, thiab tom qab ntawd rov mus rau lub xeev ua kua.

• Saib kuj: Piv txwv ntawm Homogeneous Mixtures