Cov txheej txheem:
Video: Cov tshuaj lom neeg puas tsuaj yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tshuaj lom neeg . Tshuaj lom neeg yog cov khoom uas tuaj yeem ua rau muaj kev phom sij rau kev noj qab haus huv xws li lom, ua pa, teeb meem ntawm daim tawv nqaij, ua xua, ua xua, mob qog noj ntshav, thiab lwm yam teeb meem kev noj qab haus huv los ntawm kev raug. Piv txwv ntawm tshuaj lom neeg suav nrog: xim. tshuaj.
Hais txog qhov no, lub ntsiab txhais ntawm cov tshuaj lom neeg puas tsuaj yog dab tsi?
A tshuaj lom neeg , as txhais los ntawm Hazard Communication Standard (HCS), yog ib qho tshuaj uas tuaj yeem ua rau lub cev lossis kev noj qab haus huv phom sij . Qhov kev txiav txim siab no yog ua los ntawm cov tshuaj chaw tsim tshuaj paus, raws li tau piav nyob rau hauv 29 CFR 1910.1200(d).
Tsis tas li ntawd, ob hom kev phom sij yog dab tsi? Hauv chaw ua haujlwm muaj ob hom kev phom sij : noj qab haus huv phom sij thiab physicochemical phom sij.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog ib co piv txwv ntawm kev phom sij?
Qee qhov kev siv tshuaj lom neeg hauv chaw ua haujlwm muaj xws li:
- Cov kua qaub.
- Cov tshuaj Caustic.
- Cov khoom siv tu tsev xws li tshuaj ntxuav tais diav, tshuaj tua kab mob, tshuaj tua kab mob thiab tshuaj chlorine bleach.
- Cov nplaum.
- Cov hlau hnyav, suav nrog mercury, lead, cadmium, thiab txhuas.
- Xim.
- Tshuaj tua kab.
- Petroleum khoom.
Ua li cas koj thiaj paub yog tias muaj tshuaj lom neeg?
Txhawm rau txheeb xyuas yog hais tias ib yam khoom muaj teeb meem , kuaj cov khoom lub thawv ntawv thiab / lossis SDS uas muaj los ntawm tus neeg muag khoom. Cov ntawv sau ntawm tshuaj lom neeg feem ntau muaj cov lus 'kev phom sij' lossis ' ceeb toom', nrog rau cov duab cuam tshuam thiab cov ntsiab lus ntawm phom sij.
Pom zoo:
Puas yog cov tshuaj lom neeg pov tseg puas tsuaj?
Ib yam li cov roj teeb, cov tshuaj spa thiab pas dej ua ke yog cov khib nyiab uas yuav tsum tau muab pov tseg kom zoo - thiab tsis txhob nyob hauv cov thoob khib nyiab
Dab tsi yog tshuaj lom neeg cov tshuaj tiv thaiv hauv biology?
Hauv cov ntsiab lus, cov tshuaj tiv thaiv tshuaj yog cov txheej txheem uas hloov ib lossis ntau yam rau lwm yam khoom. Cov tshuaj tiv thaiv tshuaj pib nrog reactants thiab hloov mus rau hauv cov khoom
Dab tsi yog qhov sib txawv tseem ceeb ntawm tshuaj lom neeg thiab cov tshuaj tiv thaiv nuclear Lub hlwb?
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Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog
Dab tsi yog tshuaj lom neeg cov tshuaj tiv thaiv thiab cov tshuaj tiv thaiv lub cev?
Qhov sib txawv ntawm cov tshuaj tiv thaiv lub cev thiab cov tshuaj tiv thaiv tshuaj yog muaj pes tsawg leeg. Hauv cov tshuaj tiv thaiv tshuaj, muaj kev hloov pauv ntawm cov tshuaj hauv nqe lus nug; nyob rau hauv ib qho kev hloov ntawm lub cev muaj qhov sib txawv ntawm qhov tsos, tsis hnov tsw, los yog cov duab yooj yim ntawm cov qauv ntawm cov teeb meem yam tsis muaj kev hloov pauv hauv cov ntsiab lus