
Skābes un bāzes
Authored by Inese Lunte
Chemistry
8th - 9th Grade
10 Questions
Used 8+ times

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kura no dotajām vielām ir skābe?
H2SO4
H2O
NaOH
NaCl
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kura ir dzelzs (II) hidroksīda formula?
FeO
Fe(OH)2
Fe(OH)3
FeS
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kā sauc vielas, kas maina krāsu skābā vai bāziskā vidē?
skābes
bāzes
indikatori
sāļi
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tomāti labi aug, ja augsnes pH vērtība ir 6,0. Kāda vide jānodrošina tomātiem?
neitrāla
vāji skāba
vāji bāziska
ļoti skāba
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nosaki, kāda vide ir kuņģa sulā, ja tās pH ir 1,7?
neitrāla
bāziska
skāba
vāji skāba
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kurš no vienādojumiem attēlo bāzes iegūšanu no oksīda?
Li2O + H2O → 2LiOH
SO2 + H2O → H2SO3
CO2 + H2O → H2CO3
NaOH + HCl → NaCl + H2O
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kurš no vienādojumiem attēlo neitralizācijas reakciju?
Li2O + H2O → 2LiOH
Mg(OH)2 + 2HCl → MgCl2 + 2H2O
2HCl + Ca → CaCl2 + H2
2H3PO4 +Fe2O3 → 2FePO4 + 3H2O
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