Wednesday 18 September 2013



Workout these questions below.

Name                   : ______________________________              Marks   :
Date                      : ______________________________

1.    Katie and Nando have identical new bicycle. Katie lives in a dry, cool, grassland area and Nando lives in warm, wet region on the coast. Which bicycle may show signs of rusting first? Explain your answer.

2.    What is the relationship between rusting of metals and their reactivity?

3.    Iron, Aluminum, Lead, Copper, Tin, Zinc, Magnesium. Which of these element will rust first and which is the last?

Arrange the elements according to the reactivity. (most reactive to less reactive)

4.    Suggest the statement below:
a.         The roof of the house are potassium plate
b.         We can protect the fence in the yard by painting

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