Chemistry Worksheet: Chemical Formula, Molecular Mass, and MCQs

Write the chemical formula for Sodium oxide.

• Na2O

• NaO2

• Na2CO3

• NaCl

Write the chemical formula for Aluminium chloride.

• AlCl3

• AlCl2

• Al2Cl3

• AlCl

Write the chemical formula for Calcium hydroxide.

• Ca(OH)2

• CaO

• CaCO3

• CaSO4

Write the chemical formula for Magnesium nitrate.

• Mg(NO3)2

• Mg2(NO3)3

• Mg(NO2)2

• MgN2O6

Write the chemical formula for Ammonium sulphate.

• (NH4)2SO4

• NH4SO4

• (NH3)2SO4

• NH4SO3

Write the chemical formula for Iron(III) oxide.

• Fe2O3

• FeO

• Fe3O4

• FeO2

Write the chemical formula for Potassium permanganate.

• KMnO4

• K2MnO4

• KClO4

• K2SO4

Write the chemical formula for Zinc carbonate.

• ZnCO3

• ZnCO2

• Zn2CO3

• Zn(CO3)2

Write the chemical formula for Barium phosphate.

• Ba3(PO4)2

• Ba2(PO4)3

• Ba(PO4)2

• BaPO4

Write the chemical formula for Copper(II) sulphate.

• CuSO4

• Cu2SO4

• CuSO3

• Cu2SO3