WorksheetsWriting the chemical formula of ionic compounds
Total questions: 11
Worksheet time: 22mins
Which one of these are polyatomic ions?
Hydroxide
Barium
Ammonium
Chloride
Sulfate
Which ones of these are polyatomic ions?
Carbide
Carbonate
Sulfate
Phosphoride
Phosphate
What is the chemical formula for magnesium chloride?
MgCl2
Mg2Cl
MgCl
Mg(Cl)2
(Mg)2Cl
Write down the chemical formula for Calcium hydroxide
CaOH
(Ca)2OH
CaOH2
Ca(OH)2
What is the chemical formula of sodium sulfate
Na(SO4)2
(Na)2SO4
NaSO4
Na2SO4
What is the chemical formula of Aluminium iodide?
AI
Al2I
AlI3
ALI3
What is the chemical formula of oxygen difluoride
O2Fl
OFl2
O(Fl)2
FlO2
What is the chemical formula of Ammonia gas?
NH4
NH3-
NH3
NH4-
To write the chemical formula of ionic compounds, you must know the (a) of each ion, and balance them out so it becomes a stable compound. For example, Copper (II) chloride is written as CuCl2
To write covalent compounds, you must look at the (a) of every element to know the number of atoms in the molecule. e.g Carbon dioxide means the formula is CO2
Define molecular formula
