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ID number:213759
 
Author:
Evaluation:
Published: 16.01.2019.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Darba uzdevumi
Pēc krāsu maiņas noteikt, kuri no produktu paraugiem satur olbaltumvielas
Pierakstīt novērojumus
Izdarīt secinājumus par produktu sastāvu

Pētāmā problēma
Vai visos produktu paraugos būs sastopamas olbaltumvielas?

Pētāmie lielumi
Fiksētie lielumi - CuSO4 (5%), HNO3 un NaOH(20%) koncentrācija
Neatkarīgie lielumi - izmantoto vielu daudzums

Darba piederumi, vielas
Gabaliņš gaļas
Gabaliņš zivs
Rīsi

Author's comment
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