
Síra
Authored by Svatava Sumbalová
Chemistry
10th Grade
Used 16+ times

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20 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Síra patří mezi
chalkogeny
pentely
prvky VI. A skupiny
nekovy
kyselinotvorné prvky
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Síra může být ve sloučeninách maximálně
dvojvazná
čtyřvazná
šestivazná
osmivazná
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Síra se v přírodě vyskytuje
v sulfidech
v siřičitanech
v síranech
volná
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pyrit je
sulfid olovnatý
sulfid železnatý
disulfid železnatý
síran železnatý
síran vápenatý
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sádrovec je
CaSO4 . 1/2 H2O
CuSO4. 5 H2O
CaSO4 . 2 H2O
CaS
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Síra se jako biogenní prvek nachází především v
sacharidech
tucích
nukleových kyselinách
bílkovinách
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Síra
je rozpustná ve vodě
má 8mi atomové molekuly
je rozpustná v sirouhlíku
má nízkou teplotu tání
hoří modrým plamenem
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