
Baze - recapitulare
Authored by AURICA HONGU
Chemistry
7th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Formula generală a bazelor este:
Mn(HO)
M(OH)n
MHn
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Soluția unei baze ..................................... turnesolul, iar fenolftaleina se colorează în .........................................
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Componenta principală din varul stins, apa de var și laptele de var este:
CaCO3
Ca(OH)2
CaO
CaCl2
4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
KOH, NaOH, Ca(OH)2 sunt baze ...........................
5.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Bazele reacționează cu ..............., reacția numindu-se reacție de neutralizare.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Caracterizați baza obținută în reacția:
CuSO4 + 2NaOH = Cu(OH)2↓ + Na2SO4
precipitat albastru gelatinos
(bază insolubilă)
bază solubilă
sodă caustică
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
În șirul de baze: 1. NaOH; 2. Al(OH)3; 3. Mg(OH)2; 4. KOH, caracterul bazic crește în ordinea:
1 2 3 4
4 3 2 1
2 3 1 4
3 2 1 4
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