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ID number:258436
 
Author:
Evaluation:
Published: 27.11.2009.
Language: Latvian
Level: Secondary school
Literature: 3 units
References: Not used
Extract

Kas tas ir?
Fosfors (gr. phōs – gaisma, phoros –nesošs);
Nemetāls, simbols P;
Atomskaitlis : 15;
Brīvā veidā dabā nav sastopams;
Pazīstamas 3 alatropiskās formas – baltais, sarkanais un melnais fosfors
Baltais fosfors (dzeltenais P)
Krāsas dēļ, to iespējams sajaukt ar dzintaru;
Cieta, kristāliska, trausla viela ar ķiplokiem līdzīgu smaku;
Viegli oksidējas gaisā, izstarojot gaismu (spīd);
Indīga viela, kas jāuzglabā zem ūdens;
Nešķīst ūdenī.
Sarkanais fosfors
Tumši sarkana pulverveida viela, bez smakas;
Nav indīgs;
Nespīd;
Nešķīst ūdenī;
Oksidējas samērā grūti.…

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