Video: Dab tsi yog qhov tseem ceeb tshaj plaws alkali hlau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Sodium yog tus tseem ceeb tshaj alkali hlau . Ib tug ntawm tseem ceeb tshaj plaws ntsev ntawm sodium yog sodium chloride (NaCl) ( feem ntau ' rooj ntsev'). Nws kuj tsim cov hydroxide, sodium hydroxide (NaOH), uas feem ntau hu ua 'caustic soda'. Nws yog lub hauv paus muaj zog heev.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog ob qho tseem ceeb tshaj plaws alkali hlau?
Dab tsi yog ob qho tseem ceeb tshaj plaws alkali hlau: sodium thiab poov tshuaj ; lithium thiab poov tshuaj , los yog francium thiab lithium ?
Qhov thib ob, qhov hnyav tshaj alkali hlau yog dab tsi? cesium
Ib yam li ib tug yuav nug, dab tsi tshwj xeeb txog alkali hlau?
Raws li nrog tag nrho hlau , cov alkali hlau yog malleable, ductile, thiab zoo conductors ntawm tshav kub thiab hluav taws xob. Cov alkali hlau yog softer tshaj lwm yam hlau . Cesium thiab francium yog cov reactive tshaj plaws cov ntsiab lus hauv pab pawg no. Alkali hlau tuaj yeem tawg yog tias lawv raug dej.
Dab tsi yog alkali hlau siv rau hauv lub neej txhua hnub?
Potassium yog siv nyob rau hauv: chiv, poov tshuaj hydroxide yog siv nyob rau hauv detergents thiab poov tshuaj bromide yog ib yam tshuaj siv hauv kev yees duab. Rubidium yog siv nyob rau hauv: ib tug compound ntawm rubidium yog siv kho kev nyuaj siab. Cesium yog siv hauv: iav thiab cov khoom siv hluav taws xob kuaj pom.
Pom zoo:
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Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom