Lub tshuab nqus ziab khaub ncaws kom ua hauj lwm

Tom qab pib-up, cov khoom muab tso rau hauv lub thawv khoom rau khov. Khoos phib tawj ntawm cov khoom siv, ntawm qhov ib txhais tes, lub tshuab nqus tsev yog nqus cov dej kom tshem tawm ntawm cov dej; nyob rau lwm cov tes, thaum cov khoom yog khov, lub noo noo nyob rau hauv ib co molecules yog rho tawm. Cov nplais ntawm cov khoom yog khov. Tom qab qhov yuav tsum tau cia kom khov, cov khoom siv ua kom sov thiab cua sov, thiab cov dej hauv cov khoom siv yog coj mus rau qhov chaw khov ntawm qhov chaw ntim ntawm lub tshuab nqus tsev kom ua tiav qhov yuav tsum tau ua kom khov thiab qhuav.