Clasa aVIII-a N. P. ___________________________________________Timp de lucru 30 min. ___________ __________ ____________ Data organizrii Scor total Nota acordat Test de evaluare sumativla chimie la tema Apa. Soluiile. Disocierea electrolitic.

Varianta I

Nr.ItemiScor

1

Termin ecuaiile reaciilor ce prezint proprietle chimice ale apei. Stabilete coeficienii. Numii substanele obinute.

1. Na + H2O _________________________________________

2. CO2 + H2O __________________________________________

3. CaO + H2O _________________________________________L

0

1

2

3

4

5

6

7

8

9

2 Rezolv problema:Calculeaz ce mas de sare i ce mas de ap snt necesare pentru a prepara 400 g soluie de clorur de calciu n care partea de mas a clorurii de calciu este de 25%. Se d: Rezolvare:____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Rspuns:_________________________________________________________L

0

1

2

3

4

5

6

7

8

3 Scrie ecuaiile moleculare, ionice complete i ionice reduse ale reaciilor posibile ce au loc dac amestecm pe rnd soluiile urmtoarelor substane. HCl, K2CO3, Ba(OH)2, Fe(NO3)3, Na2O. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________L

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Clasa aVIII-a N. P. ___________________________________________Timp de lucru 30 min. ___________ __________ ____________ Data organizrii Scor total Nota acordat Test de evaluare sumativla chimie la tema Apa. Soluiile. Disocierea electrolitic.

Varianta II

Nr.ItemiScor

1

Termin ecuaiile reaciilor ce prezint proprietle chimice ale apei. Stabilete coeficienii. Numii substanele obinute.

1. Ca + H2O ____________________________________________

2. Na2 O + H2O ___________________________________________

3. SO3 + H2O ____________________________________________L

0

1

2

3

4

5

6

7

8

9

2 Rezolv problema: Calculeaz ce mas de sare i ce mas de ap snt necesare pentru a prepara 250 g soluie de carbonat de sodiu n care partea de mas a carbonatului de sodiu este de 20%. Se d: Rezolvare:______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Rspuns:_________________________________________________________L

0

1

2

3

4

5

6

7

8

3 Scrie ecuaiile moleculare, ionice complete i ionice reduse ale reaciilor posibile ce au loc dac amestecm pe rnd soluiile urmtoarelor substane. CuSO4, Na2CO3, NaOH, H2SO4, CO2. _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________L

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20