Cov alkali hlau (Li, Na, K, Rb, Cs, thiab Fr) yog cov hlau reactive tshaj plaws nyob rau hauv lub sij hawm - lawv txhua tus hnov mob hnyav lossis txawm tias tawg nrog dej txias, ua rau muaj kev hloov pauv ntawm hydrogen.
Yuav ua li cas cov hlau ua phem rau dej?
Pab 1: Alkali Metals
Alkali hlau kuj paub tias muaj kev kub ntxhov thiab tawg nrog dej. Qhov no yog vim muaj cua sov txaus thaum lub sij hawm exothermic cov tshuaj tiv thaiv kom ignite H2(g). Daim duab 1: Reactivity ntawm Lithium (sab saum toj), sodium (middle) thiab poov tshuaj (hauv qab) hlau thiab dej.
Yuav ua li cas hlau reacts nquag nrog oxygen?
Thaum ib yam khoom kub hnyiab hauv oxygen nws hu ua combustion reaction. Potassium (lilac) kub hnyiab tshaj plaws ua raws li sodium (txiv kab ntxwv-daj) thiab tom qab ntawd lithium (liab), raws li koj xav tau.
Yuav ua li cas hlau reacts nrog HCl?
Potassium, sodium, lithium thiab calciumhnov mob hnyav nrog dil. HCl.
Dab tsi yog hlau mos thiab ci?
tin yog dab tsi? Tin yog cov hlau mos nrog lub ntsej muag ci.
