Cov txheej txheem:

Dab tsi yog kev daws teeb meem hauv science ks3?
Dab tsi yog kev daws teeb meem hauv science ks3?

Video: Dab tsi yog kev daws teeb meem hauv science ks3?

Video: Dab tsi yog kev daws teeb meem hauv science ks3?
Video: Yuav tawm ntawm txoj kev txom nyem tau li cas? 2024, Kaum ib hlis
Anonim

Ib tug solute yog cov khoom uas dissolves ua ib daws . Hauv ntsev daws , ntsev yog cov kua. Cov kuab tshuaj yog cov tshuaj uas ua rau cov kuab tshuaj - nws dissolves lub solute. Hauv ntsev daws , dej yog qhov hnyav. Thaum tsis muaj cov ntsiab lus ntxiv yuav yaj, peb hais tias daws yog saturated daws.

Ib yam li ntawd, nws raug nug, dab tsi yog kev daws teeb meem hauv kev tshawb fawb?

A daws yog homogeneous hom sib tov ntawm ob los yog ntau tshaj tshuaj. A daws Nws muaj ob ntu: ib qho kuab tshuaj thiab cov kuab tshuaj. Solute yog cov khoom uas yaj, thiab cov kuab tshuaj yog feem ntau ntawm cov daws . Kev daws teeb meem tuaj yeem muaj nyob hauv ntau theem - khoom, kua, thiab roj.

Ib sab saum toj no, dab tsi tshwm sim rau qab zib hauv khob tshuaj yej BBC Bitesize? Los ntawm kev tawg qab zib rau hauv khob tshuaj yej , Jon qhia tau tias cov kev daws teeb meem tuaj yeem ua kom txaus. Thaum ib tag hmo khob yog ces txias cia, ib co ntawm cov qab zib recrystallises, ua kom pom tias cov solubility ntawm cov khoom feem ntau nce nrog qhov kub thiab txias.

Xav txog qhov no, dab tsi yog qhov sib xyaw hauv science ks3?

Cov khoom xyaw . A sib tov muaj cov khoom sib txawv uas tsis muaj tshuaj lom neeg sib koom ua ke. Piv txwv li, ib pob khoom qab zib tuaj yeem muaj a sib tov ntawm cov khoom qab zib sib txawv. A sib tov ntawm cov ntaub ntawv hlau thiab cov hmoov sulfur tuaj yeem sib cais yooj yim siv cov hlau nplaum.

10 piv txwv ntawm kev daws yog dab tsi?

Piv txwv ntawm cov kev daws teeb meem hauv tsev yuav suav nrog cov hauv qab no:

  • kas fes los yog tshuaj yej.
  • qab zib tshuaj yej los yog kas fes (qab zib ntxiv rau kev daws)
  • tej kua txiv.
  • dej ntsev.
  • bleach (sodium hypochlorite yaj hauv dej)
  • dej qab zib (xws li xab npum yaj hauv dej)
  • carbonated dej haus (carbon dioxide yaj nyob rau hauv dej yog dab tsi muab sodas lawv fizz)

Pom zoo: