Kev rau cov me nyuam nyob rau hauv lub tsev - ib tug tiag tiag txuj ci tseem ceeb!

Cov me nyuam yeej ib txwm attracted rau physics. Sim kawm nyob rau hauv tsev yuav pab tau mus ntsib nrog rau cov cai ntawm qhov thiab kawm tau ntau yam ntawm cov tshiab thiab nthuav. Yuav kom qhov no kawg, nws tsis yog tsim nyog yuav tau tos rau qhov pib ntawm lub tsev kawm ntawv lub sij hawm. Qhov no kuaj yuav ib lub koom haum nyob rau hauv tsev yooj yim. Txawm muaj cov me nyuam, lawv kawm kom muaj peev xwm npaj kev ua si uas tsis yuav tsum tau tshwj xeeb cov kev txawj thiab kev cob qhia rau cov neeg laus. Tab sis tsis txhob hnov qab txog qhov kev ruaj ntseg ntawm cov me nyuam thiab tuav lawv tsuas nyob rau hauv lub saib xyuas ntawm cov niam txiv. Ces yuav tau kom tsis txhob muaj tej yam teeb meem uas txaus ntshai rau lub neej ntawm tus me nyuam.

Peb tsim huab

Tej elementary yaam puab paub nyob rau hauv kindergarten yuav tas tuaj mus rau lub los ntawm cov me nyuam. Tom qab tag nrho, lawv lawv tus kheej muaj peev xwm tsim ib tug tiag tiag huab. Ua li no, nyob rau hauv lub peb-liter hub rau ncuav dej kub. Tom qab ci nyob rau hauv qhov yuav tsum tau muab tso rau dej khov thiab muab tso rau nws nyob rau hauv sab saum toj ntawm lub thawv. Thaum huab cua sab hauv ntawm lub nce, nws yuav pib txias. Cov pa, uas yog muaj nyob rau ntawd, yog condensed, uas ua rau ib tug huab. Zoo, raws li tsis muaj los nag? Cov tshuaj yog sov so rau hauv av, zoo li upwards. Muaj lawv nias tiv thaiv txhua lwm yam los ntawm tus mob khaub thuas, txoj kev ua huab. Thaum tau ntsib ua ke, lawv loj hlob, ua heev hnyav thiab lub caij nplooj zeeg. Yog li ntawd mus rau hauv cov nag.

Lub roob hluav taws nyob rau hauv lub rooj

Xws li ib tug kev rau cov me nyuam yuav tsim ib tug niam - fairy tsev. Koj yuav tsum tau ib tug "khawv koob wand", manipulating uas koj yuav tsum nrum ib spell, thiab tam sim ntawd pib "uas". Cov pub leejtwg ntawm ua kom pom tseeb yog heev yooj yim. Suffice nws tiaj dej ntxiv dej qab zib, slaked nrog vinegar. Tsuas yog dej qab zib yuav tsum noj ntau. Yuav ua rau nws zoo heev tiag, nws yuav ua tau ua ke nrog koj tus me nyuam rau tej pwm los ntawm plasticine tiag tiag roob hluav taws. Ces koj yuav tau ua ib qhov nyob rau hauv nws, ncuav ci dej qab zib rau vinegar, thiab ncuav maj mam. Tom qab ib co sij hawm, lub spectacle yuav zoo heev: los ntawm lub roob hluav taws pib slosh ua npuas ncauj. Txij li thaum cov me nyuam yuav kawm tau li cas lub acid reacts nrog cov alkali, thiab visually saib lub neutralization cov tshuaj tiv thaiv.

Carbonate dej, siav nyob rau hauv tsev

Cov me nyuam txoj kev yuav tsum tau tag nrho cov sij hawm mus saib. Yuav tsum qhia rau cov me nyuam yaus hais tias peb tag nrho ua pa rau saum huab cua nyob rau hauv uas cov qauv muaj ntau gases. Lawv yog cov heev yooj yim mus paub, vim hais tias lawv tsis tsw, thiab nws yog tsis yooj yim sua saib lawv. Ib tug ntawm cov yog cov pa roj carbon dioxide. Nws yog cia li ib feem ntawm lub si dej. Koj yuav tau sim mus xaiv nws txoj cai nyob rau hauv tsev. Qhov no yuav tsum muaj ob leeg hlab ntawm lub cocktail, uas txawv los ntawm txhua lwm yam nyob rau hauv txoj kab uas hla. Vos yuav tsum haum snugly mus rau hauv lub sab heev. Tom ntej no koj yuav tsum nyob rau hauv lub tsheb jam rau ib lub hnab yas raj mis yuav ua rau ib lub qhov thiab ntxig ib straw los yog kawg. Ces nws yog tsim nyog los dilute tej jam iav ntawm dej thiab ncuav rau hauv lub raj mis diav dej qab zib thiab ncuav 100 g ntawm vinegar. Tom qab ntawd sai heev koj xav mus tau ntxig cov cork nrog ib tug straw rau hauv lub raj mis, thiab lwm yam kawg dipped nyob rau hauv ib khob ntawm diluted jam. Tus me nyuam yuav tsum tau piav qhia hais tias raws li ib tug tshwm sim ntawm kev sis raug zoo nrog vinegar dej qab zib ua carbon dioxide, uas nce upward thiab yog nyob rau hauv daim ntawv ntawm bubbles. Txij li thaum cov dej yog aerated.

Ib tsab ntawv nrog ib daim card

Xws li ib tug kev yuav ua tau rau cov me nyuam mus nyob nrog cov kev ua si hu ua "Nrhiav cov khoom muaj nqis". Thiab koj muaj peev xwm cia li sau ib tsab ntawv mus rau ib co txheeb ze. Muaj ob txoj kev uas ua xws li ib tug tsab ntawv. Ua li no, ntsw tus txhuam mus rau hauv cov mis nyuj thiab sau ntawv nyeem rau ib tug dawb daim ntawv ntawm daim ntawv. Nws mas nws yeej yuav tsum qhia rau qhuav. Nyob rau hauv kev txiav txim rau nws ces nyeem, daim ntawv yuav tsum tuav tshaj zog. Qhov loj tshaj plaws yog kom tsis txhob hlawv koj tus kheej. Nws yog tseem tau mus hlau nws kub hlau. Cov yooj yim thwmsim rau cov me nyuam thiab cov laus uas xav nyob rau hauv, los pab sib sau ua ke rau hauv lub tsev neeg txawm ntau. Nws yog tseem tau mus sau los yog txiv qaub kua txiv yog yaj nyob rau hauv dej ntawm citric acid. Ces kwv yees cov lus yuav tsum tau yaj ib tug ob peb tee ntawm iodine nyob rau hauv cov dej thiab ib tug me ntsis ntub lawv daim ntawv.

ntsev xav

Yuav kom ua tau ib lub nram qab no rau cov me nyuam, nws yuav siv sij hawm thiab siab ntev. Tom qab tag nrho, nws yuav muaj loj hlob cov muaju. Koj yuav tsum tau npaj ib tug heev muaj zog ntsev tov. Nws yuav tsum yog li ntawd concentrated hais tias cov muaju tsis yaj. Tom qab nws yog tsim nyog los txo cov hlau nyob rau thaum xaus ntawm uas yuav ua tau ib tug me me lub voj. Tom qab ib co sij hawm, muaju yuav tsim muaj. Koj yuav tau khiav ib tug xyaum ua tej yam down rau woolen xov es tsis txhob ntawm hlau. Ces tus muaju pib loj hlob txawv heev. Yog hais tias cov me nyuam yeej xav nyob rau hauv lub sim, nws yuav xub muab ua los ntawm hlau crafts, thiab ces ntsw nws mus rau hauv cov tshuaj. Cov kev ua no yog yuav tsum tau los ntxias ib tug me nyuam uas yuav tsum tau saib cov plaub ntug nrog zoo txaus siab.

Lub ntsiab lus ntawm thwmsim

Yog li, yog tsim nyog sau cia hais tias txhua kev rau cov me nyuam yog ib qho tseem ceeb heev. Lawv hais raws li kev ua si los yog kev lom zem, tab sis yuav coj ntau yam kev pab rau cov me nyuam. Lawv yog cov tau tsim erudition thiab ua rau kom cov kev txaus siab ntawm cov me nyuam kawm ntawv, uas yog ib tug ntawm cov tseem ceeb tshaj plaws tej yam kev mob rau kev npaj rau tsev kawm ntawv. Cov kev kawm no yuav muaj nyob rau hauv kev quab yuam txawm mus rau cov neeg uas tsis muaj kev txawj ntse ntawm Science News for KIDS thiab physics. tshwj xeeb tshuaj set yuav tsis txawm yuav tau nqa tawm xws li thwmsim, uas yog heev kim. Tag nrho cov uas yuav tsum tau rau zaj lus no, koj yuav nrhiav tau ib lub tsev. Tsis txhob ntshai ntawm thwmsim. Sim kawm yuav sib txawv thiab ua rau cov teeb meem. Txhua yam nyob rau lub siab nyiam, u, thiab tus me nyuam lub hnub nyoog. Tab sis tsis txhob hnov qab: cov me nyuam yuav tsum paub hais tias lawv ua dab tsi. Yog li ntawd, tag nrho cov kev ua tsim nyog los tawm tswv yim rau thiab piav qhia txog cov txheej txheem.