Elemental hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), thiab chlorine (Cl, element 17) yogtag nrho cov pa roj hauv chav sov , thiab pom tias yog diatomic molecules (H 2, N2, O 2, F2, Cl2).
Puas muaj pes tsawg lub ntsiab yog gaseous ntawm chav tsev?
Tseem muaj tiag tiag xya lub ntsiab lus diatomic. Tsib ntawm lawv - hydrogen, nitrogen, fluorine, oxygen thiab chlorine - yog gases ntawm chav tsev kub thiab lub siab ib txwm. Lawv qee zaum hu ua cov pa roj carbon monoxide.
Vim li cas qee cov ntsiab lus roj hauv chav sov?
Gases muaj qhov qis tshaj plaws ntawm peb, yog cov compressible heev, thiab ua tiav tag nrho cov thawv uas lawv muab tso rau. Gases coj li no vim hais tias lawv cov rog intermolecular kuj tsis muaj zog, yog li lawv cov molecules tas li txav ntawm nws tus kheej ntawm lwm cov molecules tam sim no.
Cov ntsiab lus twg yog cov khoom nyob hauv chav sov?
Cov khoom uas muaj zog ntawm chav tsev kub yog Hlau thiab tooj. Feem ntau cov ntsiab lus nyob rau hauv lub sij hawm muaj nyob rau hauv solid-state. Lawv qhia meej cov duab thiab ntim.
Koj ua li cas thiaj txiav txim siab tias qhov sib xyaw puas yog roj ntawm chav sov?
Yog ob qho tib si nws qhov chaw melting ib txwm thiab nws qhov kub ib txwm yog qis dua chav tsev kub(20 ° C), cov khoom yog cov roj hauv ib txwm muaj. Qhov nruab nrab melting point ntawm oxygen yog -218 ° C; Nws qhov kub kub ib txwm yog -189 ° C. Oxygen yog ib qho roj ntawm chav tsev kub.
