Question

Is there a mnemonic to remember the names of the ores of iron:

• Hematite (Fe₂O₃)
• Magnetite (Fe₂O₄)
• Siderite (FeCO₃)
• Iron pyrite (FeS₂)
• Limonite  (Fe₂O₃.3H₂O)

Answer 1

Here is a trick to remember the names of the ores of iron:

Head Master got Sick of 5 Lemons from Iran

• Head - Hematite (Fe₂O₃) 
• Master - Magnetite (Fe₂O₄)
• Sick - Siderite (FeCO₃)
• Iran - Iron pyrite (FeS₂)
• Lemon - Limonite  (Fe₂O₃.3H₂O)

Number 5 indicates there are total number of 5 items in the list.