Cov txheej txheem:
Video: Dab tsi yog cov khoom ntawm cov hlau BBC Bitesize?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub cev muaj zog
| Hlau | Cov hlau tsis muaj hlau |
|---|---|
| Zoo conductors ntawm hluav taws xob | Tsis zoo conductors ntawm hluav taws xob |
| Zoo conductors ntawm tshav kub | Tsis zoo conductors ntawm tshav kub |
| High ceev | Tsawg ceev |
| Malleable thiab ductile | Txhaum |
Ib yam li ntawd, koj tuaj yeem nug, cov khoom ntawm cov hlau ks3 yog dab tsi?
Lawv yog: ci iab, tshwj xeeb tshaj yog thaum lawv tau txiav tshiab. zoo conductors ntawm tshav kub thiab hluav taws xob. malleable (lawv tuaj yeem khoov thiab zoo li yam tsis tau tawg)
Kuj Paub, dab tsi yog cov khoom ntawm hlau thiab nonmetals chemistry? Nonmetals muaj khoom opposite cov hlau . Cov nonmetals yog nkig, tsis malleable los yog ductile, tsis zoo conductors ntawm ob lub tshav kub thiab hluav taws xob, thiab zoo li yuav tau txais electrons nyob rau hauv tshuaj cov tshuaj tiv thaiv. Ib txhia nonmetals yog kua. Cov ntsiab lus no tau qhia hauv daim duab hauv qab no.
Tsis tas li ntawd, cov khoom ntawm hlau yog dab tsi?
Hlau Physical Properties:
- Lustrous (shiny)
- Zoo conductors ntawm tshav kub thiab hluav taws xob.
- Siab melting point.
- High ceev (hnyav rau lawv qhov loj me)
- Malleable (yuav tau hammered)
- Ductile (tuaj yeem kos rau hauv cov xov hlau)
- Feem ntau yog khoom ntawm chav tsev kub (qhov tshwj xeeb yog mercury)
- Opaque raws li ib daim ntawv nyias (tsis pom los ntawm cov hlau)
Vim li cas cov hlau zoo conductors BBC Bitesize?
Cov qauv thiab kev sib txuas ntawm hlau piav qhia lawv cov khoom: lawv yog hluav taws xob tus thawj coj vim lawv cov delocalised electrons nqa hluav taws xob los ntawm cov hlau. lawv yog zoo conductors ntawm thermal zog vim lawv delocalised electrons hloov zog.
Pom zoo:
Dab tsi yog qhov me me ntawm cov khoom uas khaws cov khoom ntawm lub caij?
Ib qho atom yog qhov tsawg tshaj plaws ntawm txhua lub caij uas tseem khaws cov yam ntxwv ntawm lub caij ntawd. Ib daim ntawm ib lub caij uas peb tuaj yeem pom lossis kov yog ua los ntawm ntau, ntau atoms thiab tag nrho cov atoms yog tib yam lawv txhua tus muaj tib tus naj npawb ntawm protons
Dab tsi yog cov hlau nplaum uas ua los ntawm qhov kev npaj ntawm electrons yog dab tsi?
Electrons yog teem rau hauv plhaub thiab orbitals nyob rau hauv ib tug atom. Yog hais tias lawv sau lub orbitals kom muaj ntau spin taw tes rau hauv qab (los yog vice versa), txhua atom yuav ua zoo li ib tug me me hlau nplaum. Thaum ib daim ntawm cov hlau tsis muaj hlau nplaum (lossis lwm yam khoom siv ferromagnetic) raug rau sab nraud magnetic teb, ob yam tshwm sim
Dab tsi yog 4 yam khoom ntawm cov hlau tsis muaj hlau?
Summary of Common Properties High ionization energies. High electronegativities. Cov thermal conductors tsis zoo. Cov hluav taws xob tsis zoo. Cov khoom tawg yooj yim - tsis tuaj yeem ua los yog ductile. Me me los yog tsis muaj xim hlau luster. Tau txais electrons yooj yim. Npub, tsis yog xim hlau-ci, txawm tias lawv yuav muaj xim
Dab tsi yog txhais los ntawm lub sij hawm dissociation thiab dab tsi yog ib qho piv txwv ntawm cov khoom uas dissociates?
Dissociation, nyob rau hauv chemistry, sib cais ntawm ib yam khoom mus rau hauv atoms los yog ions. Thermal dissociation tshwm sim ntawm qhov kub thiab txias. Piv txwv li, hydrogen molecules (H 2) dissociate rau hauv atoms (H) ntawm kub heev; ntawm 5,000 ° K txog 95% ntawm cov molecules hauv cov qauv ntawm hydrogen yog dissociated rau hauv atoms
Dab tsi yog cov khoom pov tseg ntawm cov saw hlau thauj khoom?
Yog tias muaj cov pa oxygen, kev ua pa ntawm tes hloov lub zog los ntawm ib qho molecule ntawm qabzib mus rau 38 molecules ntawm ATP, tso carbon dioxide thiab dej pov tseg