Yuav ua li cas yog tus nqi ntawm cov tshuaj yeeb dej caw thiab raws li ntsuas

Peb tham txog dab tsi yog tus nqi ntawm cov tshuaj yeeb dej caw li lub sij hawm yog siv nyob rau hauv Science kawm. Txij li thaum lub quantitative kev sib raug zoo nyob rau hauv Science News for KIDS, physics yog muab loj saib xyuas, nws yog ib qho tseem ceeb kom paub tias lub cev lub ntsiab lus ntawm lub qhov ntau, lawv units, teb ntawm daim ntawv thov.

Los, txhais, units

Cov Science News for KIDS ntawm kev tseem ceeb yog lub quantitative kev sib raug zoo. Yuav kom ua tau suav siv cov qhov tseem ceeb raws li qhov sib npaug. Nyob rau hauv thiaj li yuav to taub li cas yog tus nqi ntawm cov teeb meem nyob rau hauv Science News for KIDS, peb yuav muab lub ntsiab txhais ntawm lub sij hawm. Qhov no yog ib lub cev muaj nuj nqis uas characterizes lub xov tooj ntawm zoo xws li cov chav nyob (atoms, ions, molecules, thiab electrons) tam sim no nyob rau hauv cov khoom. Yuav kom to taub li cas yog tus nqi ntawm cov teeb meem, peb nco ntsoov hais tias qhov no tus nqi nws muaj nws tus kheej los. Nyob rau hauv cov lus teb, implying siv ntawm cov nqi no, siv cov tsab ntawv n. Chav - mol kmol mmol.

Tus nqi

Yim kawm qib uas tau tseem tsis tau paub yuav ua li cas sau ntawv tshuaj sib npaug tsis paub dab tsi tus nqi ntawm lub substance, yuav ua li cas yuav siv no tus nqi nyob rau hauv lub xam. Tom qab familiarization li txoj cai ntawm qhov hnyav tshuaj, nws yuav ntshiab nqi ntawm no kom muaj nuj nqis. Piv txwv li, nyob rau hauv cov tshuaj tiv thaiv ntawm hydrogen combustion nyob rau hauv cov pa reactants piv ntawm ob mus rau ib tug. Yog hais tias hydrogen yog lub npe hu loj, uas nkag mus rau hauv tus txheej txheem, nws yog ua tau los mus txiav txim rau qhov nyiaj ntawm cov pa coj ib feem nyob rau hauv cov tshuaj cov tshuaj tiv thaiv.

Daim ntawv thov ntawm cov qauv nyob rau hauv lub chaw tub rog thiaj li tus piv ntawm cov pib reagents, mus piv rau suav. Yuav ua li cas yog tus nqi ntawm cov teeb meem nyob rau hauv Science News for KIDS? Nyob rau hauv cov nqe lus ntawm zauv, qhov no stereochemical yam muab tso rau hauv kab zauv. Hais tias yog, lawv yog siv los nqa tawm tej suav. Qhov ntawd yuav ua li cas suav tus xov tooj ntawm molecules yog tsis yooj yim, nws yog enjoyed mol. Siv Avogadro tus xov tooj, nws yuav xam hais tias 1 tus nas ntawm tej reagent muaj 6 × 1023 mol ^-1.

xam

Koj puas xav kom to taub dab tsi yog tus nqi ntawm cov tshuaj yeeb dej caw? Nyob rau hauv physics, li no tus nqi yog siv. Nws yuav tsum tau nyob rau hauv molecular physics, qhov twg cov lus teb yog nqa tawm siab gaseous volume los ntawm cov kab zauv Mendeleev-Clapeyron. Mus nqa tawm tej quantitative suav, nws siv lub tswvyim ntawm hniav puas loj.

Hauv qab no nws yog meant tus luj ntawm uas sau raws nkaus Ii ib tug tias ntawm cov tshuaj. Yuav kom txiav txim seb qhov hniav puas loj tej zaum yuav ntawm txheeb ze atomic loj (tus nqi ntawm lub teeb ntawm tus xov tooj ntawm atoms nyob rau hauv ib tug molecule) los yog los mus txiav txim tus luj los ntawm ib tug lub npe hu yeeb tshuaj, qhov nyiaj (mol).

Tsis ua hauj lwm ntawm lub tsev kawm ntawv chav kawm ntawm Science News for KIDS muaj feem xyuam rau cov lus teb ntawm kab zauv, yuav tsis ua yam uas tsis muaj kev siv ntawm cov ntsiab lus raws li "tus nqi ntawm yam khoom uas". Owning algorithm yuav tiv tsis tau tsuas yog nrog cov kev pab cuam laij, tab sis kuj nrog sophisticated Contest ua hauj lwm. Dhau li caag by luj tshuaj tej zaum kuj yuav siv cov tswvyim no, ua suav los ntawm lub hniav puas ntim. Qhov no yog muaj tseeb nyob rau hauv tus neeg mob qhov twg, nyob rau hauv kev sib koom tes koom gaseous tshuaj.