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ID number:792699
 
Author:
Evaluation:
Published: 13.07.2004.
Language: Latvian
Level: Secondary school
Literature: 5 units
References: Not used
Extract

Nātrija hlorīdu izšķīdinot ūdenī, universālindikators rāda dzeltenzaļu krāsu.Vide ir neitrāla.

Vara (II) hlorīdu izšķīdinot ūdenī universālindikators rāda viegli sarkanu krāsu.
Vide ir maījusies. Tagad tā ir skāba.

Nātrija hidrogenkarbonātu izšķīdinot ūdenī universālindikators rāda zilu krāsu. Vide ir mainījusies. Tagad tā ir sārmaina.

Alumīnija (III) sulfīdu izšķīdinot ūdenī universālindikators rāda dzeltenzaļu krāsu. Vide nav mainījusies, tā ir neitrāla.…

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