Type the formula for the compounds or species named.
Don't worry about superscripts and subscripts: if you type SO42- the program will interpret it as SO₄^2-.
Do pay attention to capital and lower case letters though.
After you have typed each formula, click on CHECK to mark it.

1. potassium permanganate

   
   
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2. potassium dichromate

   
   
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3. silver nitrate

   
   
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4. barium chloride

   
   
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5. iron(III) hydroxide

   
   
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6. iron(II) sulfate

   
   
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7. ammonia

   
   
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8. hydrogen peroxide

   
   
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9. chlorine

   
   
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10. copper(II) oxide

    
    
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11. Copper(I) oxide

    
    
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12. potassium iodide

    
    
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13. ammonium thiocyanate

    
    
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14. nitric acid

    
    
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15. sulfuric acid

    
    
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16. sodium hydroxide

    
    
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17. manganese dioxide

    
    
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18. zinc chloride

    
    
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19. sodium carbonate

    
    
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20. barium sulfate

    
    
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