Cov txheej txheem:
Video: Dab tsi yog 3 yam khoom ntawm lub hauv paus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Chemical Properties of Bases
- Bases hloov xim ntawm litmus los ntawm liab mus rau xiav.
- Lawv iab hauv saj .
- Bases poob lawv qhov pib thaum tov nrog acids.
- Bases react nrog acids los ua ntsev thiab dej.
- Lawv tuaj yeem ua hluav taws xob.
- Bases xav tias nplua los yog xab npum.
- Qee lub hauv paus yog cov khoom siv hluav taws xob zoo heev.
Ib yam li ntawd, nws yog nug, dab tsi yog cov khoom ntawm lub hauv paus?
Bases yog ionic compounds uas tsim tsis zoo hydroxide ions (OH-) thaum yaj hauv dej. Bases saj iab, hnov ntxhiab, thiab ua hluav taws xob thaum yaj hauv dej. Qhov ntsuas qhov sib txuas xws li litmus tuaj yeem siv los txheeb xyuas cov hauv paus. Bases tig liab litmus daim ntawv xiav.
Ib yam li ntawd, 3 yam khoom ntawm cov kua qaub yog dab tsi? Sau koj hnub yug mus ntxiv:
| Khoom | Acid | Puag |
|---|---|---|
| Saj | Qab Zib (vinegar) | Qab zib (baking soda) |
| Tsis hnov tsw | Nquag kub hnyiab | Feem ntau tsis muaj ntxhiab tsw (tshwj tsis yog NH3!) |
| Kev ntxhib los mos | nplaum | Slipper |
| Reactivity | Feem ntau hnov mob nrog hlau los ua H2 | React nrog ntau cov roj thiab roj |
Ib yam li ntawd, nws nug, 5 yam khoom ntawm lub hauv paus yog dab tsi?
Cov ntsiab lus hauv cov teeb no (5)
- bases muaj ib tug iab saj.
- dilute aqueous daws ntawm cov hauv paus yog nplua (xiav)
- bases hloov xim ntawm cov cim; bases yuav tig liab litmus ntawv xiav.
- bases reacts rau acids los tsim ib tug ntsev thiab dej.
Dab tsi yog 4 lub zog ntawm cov kua qaub thiab cov hauv paus?
Ntawm hauv paus ? Cov kua qaub saj qaub, hnov mob nrog hlau, hnov mob nrog carbonates, thiab tig xiav litmus daim ntawv liab. Bases saj iab, hnov ntxhiab, tsis txhob hnov qab nrog carbonates thiab tig liab litmus daim ntawv xiav.
Pom zoo:
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