Yam khoom twg muaj cov cim tawg?

Cov txheej txheem:

CLP cov duab phom sij

Video: Yam khoom twg muaj cov cim tawg?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Feem ntau koj yuav pom daim duab peb sab nrog rau tawg cim hauv nws. Piv txwv muaj xws li cov kaus poom aerosol, xws li tshuaj tsuag plaub hau lossis tshuaj pleev xim. Khoom yog corrosive thiab yuav hlawv tawv nqaij, qhov muag, caj pas, los yog plab. Piv txwv muaj xws li qhov cub ntxuav thiab lub tais ntxuav tais diav.

Ua raws li qhov xav tau, cov khoom lag luam twg muaj cov cim phom sij rau lawv?

CLP cov duab phom sij

Explosive (Symbol: exploding foob pob)
Flammable (Symbol: nplaim taws)
Oxidising (Symbol: nplaim taws hla lub voj voog)
Corrosive (Cim npe: Corrosion)
Mob toxicity (Symbol: Pob txha taub hau thiab crossbones)
Hazardous rau ib puag ncig (Symbol: tsob ntoo tuag thiab ntses)

Tsis tas li ntawd, 9 cov cim kev phom sij yog dab tsi? Lawv yog cov cim kev phom sij muab rau cov tshuaj thiab tshuaj uas yog phom sij rau kev noj qab haus huv.

Txaus ntshai rau ib puag ncig

Cov khoom tawg.
Flamable.
Oxidising.
Gas nyob rau hauv siab.
Corrosive.
Tshuaj lom.
Kev phom sij.
Mob hnyav heev.

Tom qab ntawd, lub cim tawg txhais li cas?

Txhawm rau ceeb toom peb ntawm cov tshuaj phom sij siv phom sij cim . Hom tshuaj no muab cov cua kub ntau thaum sib cuag nrog lwm yam khoom. tawg . Ib yam khoom uas yuav tawg tau yog tias nws los rau hauv cov nplaim taws lossis cua sov.

Lub cim rau tshuaj lom yog dab tsi?

Tshuaj lom cim Cov pob txha taub hau-thiab-crossbones cim (☠), suav nrog tib neeg pob txha taub hau thiab ob pob txha hla ua ke tom qab pob txha taub hau, niaj hnub no feem ntau siv los ceeb toom txog kev phom sij ntawm kev tuag, tshwj xeeb yog hais txog cov tshuaj lom.

Pom zoo:

Cov qauv ntawm cov pa roj carbon zoo li cas rau ntau yam ntawm macromolecules pom hauv cov khoom muaj sia?

Cov pa roj carbon atom muaj cov khoom tshwj xeeb uas tso cai rau nws los tsim cov ntawv cog lus rau ntau li plaub lub atoms sib txawv, ua kom muaj ntau yam khoom zoo tagnrho los ua tus qauv tsim qauv, lossis "ncaj qaum," ntawm macromolecules

Thaum koj kub calcium carbonate ib qho khoom dawb nrog cov mis CaCO3 nws tawg los ua cov khoom calcium oxide CaO thiab carbon dioxide gas co2?

Thaum tshav kub kub tshaj 840 ° C, calcium carbonate decomposes, tso cov pa roj carbon dioxide thiab tawm hauv qab calcium oxide - cov khoom dawb. Calcium oxide hu ua txiv qaub thiab yog ib qho ntawm 10 cov tshuaj uas tsim tawm txhua xyoo los ntawm thermal decomposition ntawm limestone

Cov yam ntxwv ntawm cov ntaub ntawv twg yog qhov ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis heev?

Variation: Ib qho kev ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis sib txawv. ? Kev faib tawm: Cov xwm txheej lossis cov duab ntawm kev sib kis ntawm cov ntaub ntawv hla ntau qhov tseem ceeb (xws li tswb-puab). ? Outliers: Cov qauv piv txwv uas nyob deb heev ntawm feem ntau ntawm lwm cov qauv nqi

Cov khoom twg yog cov piv txwv ntawm cov khoom siv tshuaj xyuas txhua yam uas siv?

Piv txwv ntawm cov khoom siv tshuaj muaj xws li flammability, toxicity, acidity, reactivity (ntau hom), thiab kub ntawm combustion. Hlau, piv txwv li, ua ke nrog oxygen nyob rau hauv lub xub ntiag ntawm dej los ua xeb; chromium tsis oxidize (Daim duab 2)