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Ionic Compounds

Naming Ionic Compounds

  1. Identify the two ions that make up the compound
  2. Write the name of each ion in that same order
  3. Hint: The positive ion (metal) will always come first
  4. Hint 2: It is important to include the (II) or (III) if it is part of the ion name.


  1. $CaCO_{3}$
    • $Ca^{2+}$ and $CO_{3}^{2-}$ ions $\rightarrow$ Calcium Carbonate
  2. $MgSO_{4}$
    • Magnesium Sulfate
  3. $Fe(OH)_{2}$
    • Iron (II) Hydroxide
  4. $Fe(OH)_{3}$
    • Iron (III) Hydroxide

More Whakawai

Forming Ionic Compounds

When Ions Have Equal Charges

Whakawai / Practise

Make these simple ionic compounds:

  1. Hydrogen Chloride
  2. Calcium Sulfide
  3. Aluminium Phosphate
  4. Ammonium Hydrogen Carbonate
  5. Potassium Hydroxide
  6. Iron (II) Oxide
  7. Zinc Sulphate
  8. Iron (III) Nitride

Akoranga 13 Mahi Tuatahi

Form these simple ionic compounds:

  1. Copper Sulfate
  2. Sodium Nitrate
  3. Potassium Chloride
  4. Aluminium Nitride
  5. Iron (III) Phosphate

Te Whāinga Ako

  1. Be able to form complicated ions using swap-and-drop

Write the date and te whāinga ako in your book

When the Charges are Unequal

Swap and Drop!

  1. Remove the sign from the charges (+/-)
  2. Swap the numbers between the ions
  3. Drop them down to the bottom
Lithium OxideAluminium HydroxideAmmonium Sulphate

Whakawai / Practise

Make these more complicated ionic compounds:

  1. Hydrogen Sulphate
  2. Lithium Oxide
  3. Calcium Carbonate
  4. Lead Phosphate
  5. Lead Nitride
  6. Lead Nitrate