Download - 0 Testclasaavii A
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Test clasa a VII-aTest clasa a VII-aProfesor:Oprea MihaelaProfesor:Oprea Mihaela
Scoala:SAM Mihail Scoala:SAM Mihail KogalniceanuKogalniceanu
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NR.I1.Denumiti substantele si precizati clasa de compusi din care face parte:
Formula chimica
Denumire Oxid Acid Baza Sare
HNO3
Al2O3
CaCl2
KOH
2.Calculati masele molare pentru urmatoarele substante chimice:a)acid sulfuricb)hidroxid de magneziu3.Stabiliti coeficientii stoechiometrici pentru ecuatia chimica:
Al + S Al2S3
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NR.II1.Denumiti substantele si precizati clasa de compusi din care face parte:
Formula chimica
Denumire Oxid Acid Baza Sare
H2SO4
CO2
Ca3(PO4)2
Ca(OH)2
2.Calculati masele molare ale urmatoarelor substante chimice:a)acid fosforicb)clorura de calciu3.Stabiliti coeficientii stoechiometrici pentru ecuatia chimica:
Na + Cl2 NaCl