Need ideas for home "magic" chemistry tricks

Oct 30, 2012 13:38

Когда я была во втором классе, наша учительница нам однажды показала "химические фокусы". Из самого запомнившегося мне, она резала линейкой кожу "до крови". То есть проводила линейкой по руке, и на руке оставалась красная полоса. Потом она нам рассказала, что на линейке у нее был один химикат, а руку она протерла ваткой с другим, под эгидой " ( Read more... )

parenthood, ilk, celebrations, science

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Comments 44

_doublev_ October 30 2012, 17:44:33 UTC
are you friends with sofa_m
i think she once recommended some download of a cool russian books of zanimatel'naya himiya. but i don't remember what it was and where from.

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angerona October 30 2012, 17:49:33 UTC
I've never heard of her before. Or the book :)

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_doublev_ October 30 2012, 17:57:20 UTC
she rarely posts. but you can go to her LJ and leave her a question. i'm sure she will respond.

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_doublev_ October 30 2012, 17:59:37 UTC
o! I found her post about it.
http://sofa-m.livejournal.com/62030.html
if the download link still works - probably worth a try.

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angerona October 30 2012, 17:58:53 UTC
спасибо, надо будет попробовать с крахмалом.

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angerona October 30 2012, 20:27:20 UTC
а есть ссылки на точно что надо?

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read_only_lj October 30 2012, 17:53:22 UTC
My vchera razvlekalis' takim: http://www.amazon.com/Scientific-Explorers-Blowing-Science-Scientists/dp/B000BURAP2/ref=sr_1_1?ie=UTF8&qid=1351619455&sr=8-1&keywords=science+kit+for+kids. Sdelali 4 opyta iz 12, 2j i 3j nam ochen' ponravilis' -- kisloty i sh'elochi okrashivalis' v raznye cveta a potom raznye zhidkosti my opredelyali kislota ili sh'eloch' ii nejtral'naya (sok yablochnyj, myl'naya voda, uksus, etc.). 4j opyt tozhe klassnyj (kak kristally vpistyvayut vodu i rastut, no tam zhdat nado. Dal'she ne chitali/ne smotreli.

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angerona October 30 2012, 17:57:10 UTC
про определение кислот и щелочей капустным соком в моих книжках тоже есть. Но это и в Чевостике было озвучено, а мне надо что-то, чего ребенок еще не видел/слышал :)

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yelya October 30 2012, 17:53:57 UTC
I remember our chemistry teacher was doing pH indicator tricks. It looked very impressive: she poured a clear liquid into an orange liquid, and a purple liquid resulted. Or: she poured a clear liquid into a clear liquid, and an orange liquid resulted (for example). It looked very impressive. I am not sure if you would be able to explain the concept of pH to your kids at this point, though. Not sure where to buy the chemicals, although you may be able to buy indicator strips and pour vinegar on them or smth.

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angerona October 30 2012, 17:58:25 UTC
I don't care about being able to explain the concept at the time I do these experiments. I want it to be more of a "magic show" for several kids.

One of the recommended indicators is red cabbage juice, but my kids already know about that one, so it won't be quite as magical to them. need some other one :).

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yelya October 30 2012, 18:00:28 UTC
http://www.amazon.com/0-14-indicator-strips-100-box/dp/B001T77WW2

Don't they have "Yunyi ximik" or something similar here in America?

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angerona October 30 2012, 18:02:33 UTC
нынешние "Юные Химики" идут с пластиковыми бикерами и совсем без химикатов.

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angerona October 30 2012, 18:03:43 UTC
спасибо. Теперь вопрос про то, где брать фенолфталеин :)

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demenyaka October 30 2012, 18:19:41 UTC
только лучше не отпивать все-таки из стакана с водой. одно из самых основных правил химлаборатории - ничего в рот не класть. никогда.

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