Koj puas tau hnov dua dej khov? Nws zoo li tsis yooj yim vim tias dej khov feem ntau txias. Txawm li cas los xij, peb tsis tham txog cov dej khov zoo tib yam. Koj tuaj yeem ua sodium acetate siv tib cov khoom xyaw uas ua rau ci dej qab zib volcanoes. Thaum sodium acetate txias hauv qab khov, ua kua ua kua, npaj kom khov ntawm qhov ua rau me ntsis. Hauv cov txheej txheem ntawm kev tsim cov nplais uas muaj zog, qhov kub tawg tau tso tawm thiab koj tau txais "dej khov".
Kauj ruam
Txoj Kev 1 ntawm 2: Ua Sodium Acetate hauv Tsev
Kauj Ruam 1. Nqa lub lauj kaub loj
Xaiv lub lauj kaub huv uas ua los ntawm cov hlau lossis Pyrex nrog qhov muaj peev xwm tsawg kawg yog ob litres. "Dej khov" tsis muaj tshuaj lom. Yog li, tsis txhob ntshai lub lauj kaub puas thiab siv tsis tau ntxiv lawm.
Tsis txhob siv cov lauj kaub tooj liab
Kauj Ruam 2. Ntxiv baking soda
Ncuav 3 dia (45 ml) ntawm ci dej qab zib rau hauv lub lauj kaub.
Tsis txhob siv cov hmoov ci li nws muaj lwm yam tshuaj uas tuaj yeem cuam tshuam rau txheej txheem
Kauj Ruam 3. Ncuav cov kua dawb
Ntsuas tawm txog ib quart ntawm cov kua dawb, tom qab ntawd maj mam ncuav nws mus rau hauv lub lauj kaub. Cov kua yuav fizz tam sim thiab ua npuas ncauj. Yog li, tsis txhob ncuav cov kua txiv ib zaug kom nws tsis ntws.
Hauv qhov no, koj tab tom siv 5% acetic acid, uas yog tus qauv vinegar. Koj tsis tas yuav ntsuas qhov tseeb.
Kauj Ruam 4. Tos kom cov kua kom tsis txhob khov
Vinegar (acetic acid) thiab ci dej qab zib (sodium bicarbonate) ua rau cov tshuaj sodium acetate, nrog rau cov pa roj carbon dioxide, uas ua rau txhua qhov no tsis zoo. Thaum cov kua txuas ntxiv mus, ua kom zoo kom yaj tag nrho cov ci dej qab zib. Tom qab ntawd, tos kom cov tshuaj tiv thaiv nres.
Kauj Ruam 5. Ua kom ntseeg tau tias cov kua ntshiab
Yog tias koj tseem pom cov nplej ntawm ci dej qab zib, ntxiv vinegar kom txog thaum nws tag nrho. Cov dej qab zib uas seem tuaj yeem khov "dej khov" ua ntej ntxov hauv cov txheej txheem tom ntej.
Kauj Ruam 6. Kub cov kua kom txog thaum thawj txheej tshwm rau ntawm qhov chaw
Qhov loj tshaj plaws ntawm cov kua txiv hmab txiv ntoo yog dej, uas yuav tsum tau yaj. Tom qab kwv yees li 90% ntawm cov kua tau evaporated (feem ntau nws yuav siv sijhawm ib nrab teev lossis ntau dua), cov txheej txheej tau pib tsim rau saum npoo. Qhov no txhais tau tias tag nrho cov dej ntau dhau tau evaporated thiab koj yuav tsum tua hluav taws kom sai li sai tau. Yog tias muaj txheej txheej ntau dhau, cov kua yuav ua pos huab thiab yuav tsis ua haujlwm zoo.
- Yog tias cov kua ntau dhau thiab xim av, ntxiv me ntsis vinegar thiab coj mus rhaub dua.
- Thaum pib, sodium acetate tau tsim los ua cov khoom sib xyaw "sodium acetate trihydrate", uas txhais tau tias nws muaj dej. Tom qab tag nrho cov dej ploj mus, cov dej molecules pib qhuav thiab sodium acetate dhau los ua "sodium acetate anhydrous", uas txhais tau tias "tsis muaj dej".
Kauj Ruam 7. Qhib cov nplais ntawm phab ntsa ntawm lub lauj kaub
Thaum cov dej tau evaporated, koj yuav pom cov sodium acetate muaju lo rau ntawm phab ntsa ntawm lub lauj kaub. Koj yuav xav tau nws tom qab. Yog li, siv rab diav los sau lawv rau hauv ib lub thawv cais. Koj tuaj yeem ua qhov no txhua lub sijhawm thaum cov kua txuas ntxiv mus.
Kauj Ruam 8. Ncuav cov kua rau hauv lub khob ntim tau
Siv rab diav kua zaub los nchuav cov kua rau hauv lub lauj kaub Pyrex uas huv los yog lwm lub thawv uas tiv taus cua sov. Nco ntsoov tias tsis muaj cov khoom muaju tau ntim rau hauv lub khob. Kaw lub thawv kom nruj.
Nws raug nquahu kom ntxiv 1 lossis 2 diav (15-30 ml) ntawm kua txiv. Cov kua txiv hmab txiv ntoo yuav pab khaws cov tshuaj hauv lub xeev ua kua thiab tiv thaiv kev rov tsim cov txheej txheej khov dua
Kauj Ruam 9. Txias lub thawv rau hauv cov dej khov nab kuab
Tos rau lub thawv sodium acetate kom txias rau chav sov lossis qis dua. Cov txheej txheem no tuaj yeem siv sijhawm 15 feeb yog tias koj siv dej txias txias, lossis ntev dua yog tias koj tso lub khob rau hauv lub tub yees. Lub hom phiaj yog ua kom sodium acetate trihydrate "txias heev". Qhov no txhais tau tias cov kua yuav poob qis dua qhov khov, tab sis tseem ua kua.
Yog tias cov dej khov nyob rau theem no, tej zaum yuav muaj cov khoom ua kua crystalline hauv nws lossis lwm yam kab mob. Ntxiv me ntsis vinegar, rhaub cov tshuaj rau ntawm lub qhov cub, thiab rov ua cov txheej txheem. Cov txheej txheem no nyuaj. Yog li, nws tsis tshua ua haujlwm thawj zaug koj sim
Kauj Ruam 10. Ntxiv me ntsis ntawm sodium acetate crystals mus rau cov tshuaj
Siv cov hmoov uas koj sau los ntawm lub lauj kaub thaum evaporating cov tshuaj. Pib los ntawm kev ntxiv pinch lossis ob ntawm cov hmoov crystalline. Yog tias tsis muaj dab tsi tshwm sim, ntxiv ntxiv.
Kauj Ruam 11. Saib xyuas kev tsim cov dej khov
Khoom sodium acetate ua haujlwm ua noob siv lead ua los ua txhua yam supercooled acetate. Txij li cov sodium acetate tau supercooled thiab npaj kom khov, qhov sib ntxiv ntawm cov khoom ua ke yuav ua rau cov tshuaj tiv thaiv nrawm thiab khov tag nrho cov tshuaj. Cov txheej txheem no tso tawm cua sov, uas tuaj yeem hnov tau yooj yim yog tias koj tuav koj txhais tes ze ntawm lub khob.
Yog tias qhov no tsis tshwm sim, muaj teeb meem nrog kev daws teeb meem. Ntxiv cov kua txiv hmab txiv ntoo thiab coj mus rau rhaub dua, lossis sim ua kom muaj kev ntseeg siab dua siv cov khoom lag luam tsim sodium acetate raws li tau piav qhia hauv qab no
Txoj Kev 2 ntawm 2: Siv Kev Lag Luam Sodium Acetate
Kauj Ruam 1. Nrhiav sodium acetate trihydrate
Txawm hais tias nws yog cov khoom pheej yig thiab tsis muaj tshuaj lom, nws tsis yooj yim mus nrhiav nws hauv khw muag khoom hauv nroog. Nws yuav yooj yim dua yuav nws hauv is taws nem. Koj tuaj yeem tuaj yeem tau txais nws los ntawm kev qhib lub ncoo cua sov uas kub thaum koj nyem nws.
Sodium acetate kuj tseem muag nyob rau hauv daim ntawv ntawm "sodium acetate anhydrous", thiab qee tus neeg muab khoom lag luam tsis qhia meej daim ntawv ntawm lawv cov khoom. Cov lus qhia hauv qab no npog ob hom tshuaj sodium acetate
Kauj Ruam 2. Muab sodium acetate tso rau hauv cov dej npau
Ncuav sodium acetate rau hauv cov hlau lossis Pyrex ntim, tom qab ntawd muab lub khob ntim rau hauv cov dej npau. Cov sodium acetate yuav yaj rau hauv cov kua ntshiab sodium acetate trihydrate lossis "dej khov".
- Yog tias sodium acetate tsis yaj, nws txhais tau tias koj yuav anhydrous sodium acetate. Txhawm rau hloov nws mus rau sodium acetate trihydrate, ntxiv dej kub yam tsis tshem nws los ntawm lub lauj kaub dej npau. Koj xav tau kwv yees li 2 ml dej rau txhua txhua 3 g ntawm sodium acetate kom cov tshuaj tau yaj tag.
- Tsis txhob siv tag nrho cov sodium acetate. Tom qab ntawd, koj yuav xav tau qee yam ntawm nws.
Kauj Ruam 3. Muab tub yees tam sim ntawd
Ncuav cov kua mus rau hauv lub khob huv, npog nws, thiab muab tso rau hauv cov dej khov lossis lub tub yees kom txog thaum nws mus txog qhov kub hauv chav lossis qis dua. Nco ntsoov tias tsis muaj cov tshuaj sodium acetate hais hauv lub ntim. Txwv tsis pub, cov kua yuav khov dhau thaum ntxov.
Kauj Ruam 4. Ntxiv ib qho me me ntawm sodium sodium acetate rau qhov txias txias
Cov khoom siv lead ua tau zoo yuav ua lub hauv paus ntsiab lus uas tso cai rau lwm cov sodium acetate molecules kom nyob ruaj khov thiab txhim kho mus rau hauv daim ntawv crystalline. Tsis muaj sij hawm tag nrho cov thawv yuav zoo li cov dej khov, tab sis ua kom sov sov!
Lwm yam kab mob kuj tuaj yeem ua rau txhaws tau yog tias lawv zoo li qub. Qhov no txhais tau tias koj tuaj yeem pib khov los ntawm kev kov cov tshuaj nrog tus pas txhuam hniav lossis ntiv tes. Txawm li cas los xij, cov kua sodium acetate tsuas yog txoj hauv kev txhim kho kom ua tiav cov txheej txheem no
Lub tswv yim
- Koj tuaj yeem ua cov duab puab yog tias koj nchuav cov tshuaj tov rau hauv ib qho me me ntawm cov khoom muaju. Txoj kev daws teeb meem yuav ua kom khov ntxiv thaum sib cuag nrog cov muaju thiab yuav txuas ntxiv ua kom muaj zog ntxiv thaum koj nchuav cov tshuaj. Tsis muaj sijhawm, koj yuav muaj ntauwd dej khov!
- Dej khov hauv tsev yog qhov nyuaj rau siv thiab ua rau muaj txiaj ntsig zoo dua li khw muag khoom. Yog tias koj muaj teeb meem, ntxiv kua txiv ntau ntxiv, nqa dej kom npau, thiab sim dua.
- Koj tuaj yeem yaj qhov nyuaj "dej khov" thiab rov ua cov txheej txheem txias dua. Txij li thaum koj tsis xav tau ua kom cov dej ntws mus ntxiv, koj tuaj yeem ua kom khov dej khov hauv lub microwave.
