1. Kev nkag mus rau cov tshuaj: "Peb qhov tsis raug" Lus Cim: Lub raj mis qub reagent tsis tuaj yeem xa rov qab mus rau chav kuaj tom qab nws tau muab tshem tawm lossis siv lawm. A: Kev nkag mus rau cov khoom siv tshuaj Siv cov tweezers rau cov khib nyiab (kev ua haujlwm tshwj xeeb: ua ntej tso lub thawv kab rov tav, muab cov tshuaj tso rau hauv lub qhov ncauj ntawm lub thawv, thiab tom qab ntawd

1.Test tubes feem ntau siv: 2.Lub beaker feem ntau yog siv rau: 3. Flask (round hauv qab lub raj mis, ca hauv qab khob): 4. Erlenmeyer fwj feem ntau yog siv rau: 5.Evaporating tais diav feem ntau yog siv rau concentration los yog evaporation. ntawm kev daws teeb meem. 6.Cov yas dropper yog siv los tshem tawm thiab ntxiv cov kua me me. Lus Cim: 7.A ntsuas lub tog raj kheej

1. Yuav ua li cas ntxuav pipettes thiab suction raj? Ob lub pipette thiab lub raj nqus dej tuaj yeem ntxuav nrog cov kais dej, tom qab ntawd yaug nrog cov roj distilled, thaum nws qias neeg (thaum lub phab ntsa sab hauv dai nrog dej tee), nws tuaj yeem ntxuav nrog chromic acid ntxuav kua. 2. Txoj kev ntxuav yog dab tsi

1, Yuav ua li cas yog txoj kev ntawm oiling ib tug acid burette? Tshem tawm lub piston, siv daim ntawv huv los yog daim ntaub kom qhuav cov phab ntsa sab hauv ntawm lub piston thiab lub tes tsho. Siv peb tus ntiv tes thov ib qho me me ntawm Vaseline los siv lub voj voog nyias ntawm ob sab ntawm lub piston. Tsis txhob siv Vaseline rau ob leeg

Kev kuaj lub cev thiab tshuaj lom neeg yog ib qho ntawm cov khoom tseem ceeb ntawm kev kuaj sim, thiab nws cov txiaj ntsig kev sim yog lub hauv paus tseem ceeb rau kev txiav txim siab cov khoom zoo. Muaj peb qhov tseem ceeb ntawm kev ua yuam kev hauv lub cev thiab tshuaj lom neeg lub cev: kev ua yuam kev, kev ua yuam kev random thiab tib neeg yuam kev. Tom qab ntawd, dab tsi yog qhov laj thawj tshwj xeeb ntawm txhua qhov yuam kev?

Cov iav iav feem ntau siv thaum lub sijhawm sim, yog li kev sib tsoo muaj ntau, yog li nws tseem ceeb heev kom paub cov khoom ntawm iav ua ntej siv glassware.Hardness ———– hardness yog 6 ~ 7, nkig, tawg yog lub plhaub zoo li cov cuab yeej ntse. .Strength ———– Muaj zog tiv taus siab tab sis tsis muaj zog tensile lub zog, yooj yim rau tawg.Heat resistance ——– tsis zoo thermal conductivity,

Kev txiav iav 1. Nws yog ib qho tsim nyog kom paub meej tias cov iav yuav raug txiav yog deformed los yog tawg, thiab nws yuav siv tsis tau yog tias nws tsis tsim nyog. 2. Lub iav raj ( pas nrig) ​​yuav tsum tau passivated ua ntej yog tias ob qhov kawg yog ntse. 3. Ua ntej siv lub trowel los kos ib qho kos ntawm qhov chaw

1 、 Round (pas) hauv qab Boiling flask ●Specification: Peev Xwm (mL) 5-2000, tuaj yeem sib tw Rubber stopper ●Main use: cua sov thiab distilling kua, tiaj-hauv qab lub raj mis yuav nruab tau ntxuav kua ● Ceeb toom: Feem ntau tsis txhob tso cua sov. ntawm qhov hluav taws kub, yuav tsum yog pob zeb paj rwb net lossis ntau lub tsho cua sov, cua sov da dej, thiab lwm yam., ●Cov ntsiab lus tsis ntau tshaj 2/3

1. Cov txheej txheem cua sov yog ib kauj ruam hauv kev tshuaj xyuas lub cev thiab tshuaj lom neeg. Hauv kev ua haujlwm tiag tiag, qee tus neeg feem ntau tsis quav ntsej lossis tsuas tsis tuaj yeem paub tias cov cuab yeej twg tuaj yeem ua kom sov, thiab tseem ua yuam kev. Qhov tseeb, chav kuaj iav tsis tuaj yeem ua kom sov ncaj qha, xws li ntsuas lub tog raj kheej, ntsuas khob, ntim ntim, lub raj mis reagent, thiab lwm yam.

1, Crystal iav yog hu ua dag siv lead ua. Vim tias ntuj siv lead ua tsis tshua muaj thiab tsis yooj yim rau kuv, nws tsis tuaj yeem ua tau raws li tib neeg cov kev xav tau, yog li cov iav siv lead ua dag tau yug los. Vim nws qhov siab pob tshab, nws tuaj yeem ua rau ntau yam khoom siv tes ua. 2, Ordinary iav Ordinary iav yog cov khoom siv pob tshab uas