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Anatomy, Medicine and Hygiene

 Mazgāšanas un kosmētiskie līdzekļi
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ID number:550155
 
Author:
Evaluation:
Published: 21.02.2023.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Kaut gan rakstiskās ziņas liecina par ziepju izgatavošanu jau senajā Romā, tomēr tās plaši sāka lietot tikai 19. gs. pēc tam, kad tika atklāti slimības izraisošie mikroorganismi un sabiedrība uzzināja par higiēnas nozīmi.
Ziepes ir augstāko karbonskābju (taukskābju) nātrija vai kālija sāļi.
Cietā ūdenī ziepes puto slikti.
Ziepes slikti mazgā arī skābā ūdenī.…

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