“We must trust to nothing but facts: These are presented to us by Nature, and cannot deceive. We ought, in every instance, to submit our reasoning to the test of experiment, and never to search for truth but by the natural road of experiment and observation.” ― Antoine Lavoisier, Elements of Chemistry


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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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