Question

Q-3 Write the chemical formulae of the following compounds using criss cross
formula
.
Magnesium Sulphate
Calcium Oxide
Sodium Hydroxide
Copper Nitrate
Iron Sulphate
Zinc Oxide
Copper Sulphate
Sodium Carbonate
ALUMINIUM OXIDE
ZINK SULPHATE
SODIUM OXIDE
AMMONIUM HYDROXIDE
POTASSIUM OXIDE
SODIUM CHLORIDE
ALUMINIUM PHOSPHATE​

Answer 1

Answer:

mgso4

Cao

NaOH

Fe3So4

ZnO

CuSo4

Na2CO3

Al2O3

ZnSO4

Na2O

NH4OH

k2O

NaCl

Al2(PO4)3

Answer 2

Answer:

(i) MgSO4

(ii)CaO

(iii)NaOH

(iv)Cu(NO3)2

(v)FeSO4

(vi)ZnO

(vi)CuSO4

(vii)Na2CO3

(viii)AI2O3

(ix)ZnSO⁴ - sorry the 4 should be in down not in up.

(x)Na20

(xi)NH4OH

(xii) K2O

(xiii) NaCI

(xiv) AIPO4