Skābes un bāzes

Skābes un bāzes

8th - 9th Grade

10 Qs

quiz-placeholder

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Skābes un bāzes

Skābes un bāzes

Assessment

Quiz

Chemistry

8th - 9th Grade

Practice Problem

Medium

Created by

Inese Lunte

Used 8+ times

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10 questions

Show all answers

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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