Puas yog yas ntawm lub rooj zaum?
Puas yog yas ntawm lub rooj zaum?

Video: Puas yog yas ntawm lub rooj zaum?

Video: Puas yog yas ntawm lub rooj zaum?
Video: Yasmi - Hlub Los Ntev (Official Music Video) 2024, Kaum ib hlis
Anonim

Lub sij hawm yas ” suav nrog cov ntaub ntawv uas muaj ntau yam xws li carbon, hydrogen, oxygen, nitrogen, chlorine, thiab sulfur. Cov yas Feem ntau muaj qhov hnyav molecular, txhais tau tias txhua lub molecule tuaj yeem muaj ntau txhiab atoms ua ke. Feem ntau yas yog raws li cov pa roj carbon atom.

Tom qab ntawd, cov yas puas yog cov khoom lossis cov khoom sib xyaw?

Yas tsis tuaj yeem suav tias yog ib qho khoom vim tias cov khoom yog cov khoom ntshiab , Yas yog qhov zoo tshaj plaws piav raws li cov khoom sib xyaw vim nws cov ntsiab lus tsis tuaj yeem sib cais zoo li cov ntsiab lus hauv cov khoom sib tov tuaj yeem, yam tsis muaj tshuaj tiv thaiv.

Ib yam li ntawd, cov yas ua los ntawm dab tsi? Yas yog ua los ntawm cov khoom siv ntuj tsim xws li cellulose, thee, roj nkev, ntsev thiab roj av los ntawm cov txheej txheem polymerization lossis polycondensation.

Kuj nug, lub npe tshuaj rau yas yog dab tsi?

Cov muaj pes tsawg leeg, qauv, thiab cov khoom ntawm plastics Yog li, polyethylene terephthalate thiab polyvinyl chloride feem ntau hu ua PET thiab PVC , thaum foamed polystyrene thiab polymethyl methacrylate paub los ntawm lawv cov npe lag luam, Styrofoam thiab Plexiglas (los yog Perspex).

Cov yas puas tuaj yeem pom ib txwm muaj?

Cov yas yog muab los ntawm cov ntaub ntawv pom nyob rau hauv qhov , zoo li ntuj gas, roj, thee, minerals thiab nroj tsuag. Thawj zaug yas tau tsim los ntawm xwm-koj puas paub tias roj hmab los ntawm tsob ntoo roj hmab yog qhov tiag yas ? Thawj hluavtaws yas tau muab los ntawm cellulose, ib yam khoom pom hauv cov nroj tsuag thiab ntoo.

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