WorksheetsChemical formula
Total questions: 10
Worksheet time: 30mins
The chemical formula of potassium sulphate is .........
K2SO4
KSO4
K3SO3
KSO3
Write chemical formula of ammonium sulphate.
Which of the following ionic compounds has an incorrect formula?
NaF2
AlCl3
Ca(NO3)2
KOH
What is the formula for iron(III) chloride?
FeCl
FeCl2
FeCl3
Fe3Cl
Iron(II) sulfate is composed of Fe2+ and SO42– ions. In order to form a neutral salt, what must the ratio between the two ions be?
Fe2+ : SO42– = 1 : 2
Fe2+ : SO42– = 4 : 1
Fe2+ : SO42– = 1 : 1
Fe2+ : SO42– = 1 : 4
What is the chemical formula for a molecule composed of 2 atoms of carbon, 4 atoms of hydrogen, and 1 atom of oxygen?
C2H4O1
C2H4O
C2H4O
2C4H1O
Aluminum ions have a charge of 3+ and chloride ions have a charge of 1−.What is the formula of aluminum chloride?
Al2Cl6
AlCl3
AlCl
Al2Cl3
Iron(III) ions have a charge of 3+ and oxide ions have a charge of 2−.What is the formula of iron(III) oxide?
Fe2O3
Fe4O6
Fe3O2
FeO3
What is the formula of aluminium oxide?
Al2O3
Al2(OH)3
Al2O
Al(OH)3
A magnesium atom has the chemical formula Mg.What is the chemical formula of the magnesium ion?
Mg2+
Mg(2+)
Mg+
Mg–
