Lub sijhawm khov ntawm cov rog sib xyaws?

Cov txheej txheem:

Lub sijhawm khov ntawm cov rog sib xyaws?
Lub sijhawm khov ntawm cov rog sib xyaws?
Anonim

Molecules uas muaj zog intermolecular rog yog rub ua ke kom nruj kom tsim cov khoom ntawm qhov kub siab dua, yog li lawv qhov chaw khov yog siab dua. Cov molecules nrog qis zog sib xyaw ua ke yuav tsis khov kom txog thaum qhov kub thiab txias qis dua.

Yuav ua li cas rau molecules thaum khov?

Freezing tshwm sim thaum ib cov kua txias thiab tig mus rau ib qho khoom. Nws thiaj li cov hais nyob rau hauv cov kua nres txav mus thiab nyob rau hauv ib tug ruaj khov kho, tsim ib tug khoom. … Yog tias cov roj txias txias, nws cov khoom yuav tsum tsis txhob txav mus sai heev thiab ua kua.

Yuav ua li cas cov rog muaj zog nyob hauv dej khov?

Molecular solids yog tuav ua ke los ntawm kev sib cuam tshuam cov rog-dispersion rog, dipole-dipole rog, thiab hydrogen bonding. Cov dej khov tau tuav ua ke los ntawm hydrogen bonds, thiab cov dej khov qhuav tau tuav ua ke los ntawm kev tawg rog.

Yuav ua li cas ntawm qhov chaw khov?

Kwv yees, kub uas cov kua ua ib qho khoom. Raws li nrog lub melting point, nce siab feem ntau tsa lub freezing point. Qee cov kua tuaj yeem ua tau supercooled-piv txwv li, txias hauv qab ntawm qhov chaw khov-tsis muaj cov khoom siv lead ua. …

Qhov kub li cas cuam tshuam rau lub zog ntawm lub cev?

Thaum peb nce qhov kub, peb yog nce qhov nruab nrab kinetic zog ntawm cov khoom hauv qhov teeb meem-qhov no txhais tau tias peb tab tom ua rau lawv mussai dua. Yog hais tias cov khoom mus nrawm dua, ces lawv tuaj yeem khiav tawm ntawm lub zog ntawm lub cev.

Pom zoo:

Nthuav cov khoom
Pob splanchnic paj hlwb synapse?
Nyeem ntxiv

Pob splanchnic paj hlwb synapse?

Cov hlab ntsha loj dua splanchnic taug kev los ntawm diaphragm thiab nkag mus rau hauv plab kab noj hniav. Nws fibers synapse ntawm celiac ganglia. Cov hlab ntsha txhawb nqa rau lub celiac plexus, lub network ntawm cov hlab ntsha nyob rau thaj tsam ntawm qhov chaw ntawm lub cev celiac ceg ntawm lub plab aorta.

Yuav coreopsis puas tawg rau lub caij ntuj sov?
Nyeem ntxiv

Yuav coreopsis puas tawg rau lub caij ntuj sov?

yog qhov kev xaiv zoo meej. Nrog ntau tshaj 80 hom coreopsis, muaj ntau yam kom haum txhua lub vaj tsim. Haiv neeg rau North America, coreopsis nroj tsuag loj hlob nyob rau hauv upright clumps thiab feature masses ntawm kaj, showy, daisy-zoo li paj thoob plaws lub caij ntuj sov.

Lub ntsiab lus ntawm kev hush up yog dab tsi?
Nyeem ntxiv

Lub ntsiab lus ntawm kev hush up yog dab tsi?

: tsi ntsiag to kuv hais rau nws kom txhob maj. slang txhais li cas? Koj hais 'Hush! ' rau ib tug thaum koj nug lossis qhia kom lawv nyob ntsiag to. Nkauj ruam ruam? "Tseem" yog lus Southern uas hais tias " shut up .