Interesting Science: ukuchitha indlela amava ekhaya chemistry ukuba nomdla umntwana?

Kwisikolo aphakamileyo, baqale imichiza de kwibakala 8, kunzima kakhulu ukuba eli isayensi abantwana. Kodwa ukulungiselela umfundi kumxholo kunokuba indlela kakhulu mnandi yaye kulula - ngokuququzelela amava chemistry ekhaya. Le mini-eksperimenti kuya kusinceda ukujonga ngenzululwazi kwelinye icala, kukho ukubonakala "amaqhinga zemichiza" kwi iqela yabantwana kakhulu ukunyusa iqondo fun.

bill engangenwa

Ukuze enze iqhinga ngeyona mihle, kodwa elula, uya kudinga oku kulandelayo:

• bill;
• isisombululo zolwelo-ezinxilisayo kunye alkoholi malunga-50%;
• ityuwa;
• forceps okanye amashiya.

A uwathandabuze kufuneka zongezwe isisombululo. Okulandelayo kwi isisombululo usebenzisa amashiya ibekwe bill. Abo okokuqala unesitifiketi onjalo amava chemistry, kungcono ukuthatha isidima bill ezincinane!

Xa imali vymoknut elungileyo, kufuneka kwakhona achole amashiya kunye ngobunono vuthululani ulwelo kwemfuneko ngephepha. Ngoku unako ukubeka umlilo! Umlilo uya kuqhubeka kulo lonke oyilwayo, kodwa akukho namnye umngcipheko nkqu yoo-. Oku kungenxa yokuba utywala evuthayo eziqulathwe isisombululo. Ngenxa yoko, amanzi simanzi iphepha akanalo ixesha ngumphunga.

crystal balls

Crystal ukukhula - enye zokuzonwabisa ezithandwa kakhulu, nelinika chemistry eyonwabisayo. Ukuhlola crystallization ngokuqhelekileyo bachitha iswekile, kodwa ke awe-sugar into entsha. Sinikezela emehlweni ezintsha engaqhelekanga - kulo ziikristale yenyuka amaqanda!

iibhola Crystal zingafumaneka ngokuthi:

• alamu (kuthengiswa ezikhemisti);
• glue PVA;
• nedayi.

Le ziikristale emaqandeni ukukhula ngokukhawuleza kakhulu, nje ngosuku. Kuyimfuneko ukuba pre-ahlambe kweqokobhe ngocoselelo uze uyomise. Emva apho amaqanda iqatywe kulu kunye alamu afefe ngenxalenye. Ngoku ke kufuneka ukuba kulala phantsi iiyure ezimbalwa ukuba yome kwakhona.

Ngaphezu koko, idayi kufuneka ichithwe xa iikomityi ezimbini yamanzi mmandla. Isixa-mali idayi kungaba ukhethe ngokuzimeleyo, kulo mzekelo, kuphela ubunzulu umbala kuxhomekeke ziikristale kuyo. Amaqanda ibekwa idayi imini okanye ubusuku. Okukhona iqanda lilele isisombululo, le ziikristale bekhula enkulu. Fumana amaqanda crystal ukulungele kufanele - abasakwazi ethe-ethe.

Ibhaluni on the bottle

Njengoko kwenziwe olunyuswe ibhaloni ngaphandle helium ngaphandle kokwenza umzamo emzimbeni? Ukuze wenze oku, ungasebenzisa i nesoda yokubhaka eziqhelekileyo iviniga, esixhonteleyo ekhabhathini ekhitshini yonke mama. Ukuze afeze oku ulingelo chemistry, kuya kufuneka:

• ibhaluni;
• ibhotile;
• 3-4 iitisipuni soda;
• neviniga.

Soda wathulula ngqo ibhola ngoncedo ifanele okanye ngecephe. Emva kuwo phezu imvaba ngemali encinci iviniga. Xa soda ye ibhola uqala ukuba bavuke ebhotileni, luqala ukudumba, ngokungathi helium. Oku kungenxa yokuba i-iviniga leyo awasabela ngesoda, ikhuphe icarbon dioxide. Ibhola olunyuswe ngenxa gas phakathi imizuzwana embalwa kuphela kwaye ukubamba!

maleko multi-bala ebhotileni

Umfuniselo elandelayo umntwana chemistry uya achaze ngokucacileyo ingqikelelo lexinene engamanzi. Kuba lo:

• ikomityi kwekota yamafutha zikajongilanga;
• indebe ikota yamanzi, yabangazijongisisi ezinguwo nawuphi na umbala eqaqambileyo;
• ikomityi ikota isiraphu kweswekile (kuba ingqalelo eyiyo, oko kuyimfuneko ukuze aqinisekise ngedayi).

Umntwana angazenza kwangaphambili oko kuya kwenzeka xa ngokuxuba zonke ezi manzi. Yena efana isiphumo - isiraphu luhlala njengoko uninzi yehlathi, amanzi embindini, kunye namafutha liya kuhlala ngaphezulu. Ungabona kunye imibala kunye ulwelo, eyenza kuqamba emangalisayo. Umzekelo, ngokongeza izixa ezahlukeneyo iswekile kwi isiraphu, uya kuba nako ukufumana ezinye ulwelo loxinano ezahlukeneyo.

amalinge laboratory chemistry ukusetyenziswa kumxholo wawakhoakulula non-ekruqulayo. Ezi tricks emangalisayo kodwa ezilula zokukunceda warhwebesha umntwana ekufundweni inzululwazi nje ukonwatyiswa ngosuku olunethayo.