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Write equations for the reactions of :ca...

Write equations for the reactions of :calcium and potassium with water.

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MBD-METALS AND NON METALS-EXAMPLE
  1. Why is sodium kept immersed in kerosene oil?

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  2. Write equation for the reactions of : iron with steam

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  3. Write equations for the reactions of :calcium and potassium with water...

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  4. What would you observe when zinc is added to a solution of iron sulpha...

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  5. Write the electron-dot structure for sodium oxide.

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  6. Why do ionic compounds have high melting points?

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  7. Define the terms: mineral

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  8. Define the terms: ore

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  9. What chemical process is used for obtaining a metal from its oxide?

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  10. Metallic oxides of zinc, magnesium and copper were heated with the fol...

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  11. Which metals do not corrode easily?

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  12. What are alloys?

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  13. Which of the following pairs will give displacement reactions:

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  14. Which of the following methods is suitable for preventing an iron fryi...

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  15. An element reacts with oxygen to give a compound with a high melting p...

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  16. Food cans are coated with tin and not with zinc because:

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  17. You are given a hammer, a battery, a bulb ,wires and a switch How coul...

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  18. You are given a hammer, a battery, a bulb ,wires and a switch. Assess...

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  19. What are amphoteric oxides? give two examples of amphoteric oxides?

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  20. Name two metals which will displace hydrogen from dilute acids, and tw...

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