Puas yog ua playdough hloov lub cev lossis tshuaj lom neeg?
Puas yog ua playdough hloov lub cev lossis tshuaj lom neeg?

Video: Puas yog ua playdough hloov lub cev lossis tshuaj lom neeg?

Video: Puas yog ua playdough hloov lub cev lossis tshuaj lom neeg?
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Anonim

Kev piav qhia: Muaj cov zaub mov txawv rau ua noj ua haus ntawm lub vev xaib. Lub dissolution ntawm ntsev nyob rau hauv dej yog yeej ib tug tshuaj hloov ; mov paj (cov hmoov nplej thiab dej) yeej undergoes a tshuaj hloov thaum koj ua noj.

Ib yam li ntawd, tib neeg nug, puas yog khob noom cookie hloov tshuaj?

Cov pa roj carbon dioxide uas raug kaw ua rau mov paj nce, thiab cawv evaporates thaum lub sij hawm ci. Qhov no yog ib qho irreversible tshuaj hloov , vim hais tias los ntawm kev noj cov suab thaj, cov poov xab tau tsim cov tshuaj tshiab-carbon dioxide thiab ethanol-thiab cov tshuaj tiv thaiv tsis tuaj yeem thim rov qab.

Tsis tas li ntawd, ua li cas thaum hmoov nplej thiab dej sib xyaw? Thaum twg hmoov nplej thiab dej sib tov ua ke, dej molecules hydrate gluten-forming proteins gliadin thiab glutenin, nrog rau cov hmoov txhuv nplej siab thiab lwm cov khoom xyaw. Cov txheej txheem hydration yog ua tiav thaum cov protein thiab cov hmoov txhuv nplej siab tsim hydrogen bonds thiab hydrophilic cuam tshuam nrog dej molecules.

Ib tug kuj yuav nug, yog kev sib xyaw hmoov thiab qe hloov tshuaj?

Thaum cov ntaub ntawv yog rhuab lawv undergo a tshuaj hloov . Cov tshuaj tiv thaiv yog tsis thim rov qab. Qab zib, hmoov thiab qe sib cais tsis tau lawm. Cov khoom ntawm cov ntaub ntawv hloov pauv yog li nws yog a tshuaj hloov.

Puas yog playdough ib qho kev daws teeb meem?

' Thaum cov khoom xyaw ua kua-dej, qab zib ntawm tartar thiab zaub roj-yog tov nrog cov khoom xyaw qhuav, lawv tsim qhov hu ua ' daws . ' Kev ua noj cov khoom xyaw no ua rau muaj kev hloov tshuaj lom neeg daws thiab ib qho tshiab 'cov khoom'- ua khob noom - yog tsim.

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