This task is about fair testing and reading information from a graph.
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10 g of each of the following metals: copper, iron, magnesium, and zinc were polished, and then left to corrode on a shelf in a laboratory for 3 months. They were then polished again, the mass loss worked out, and the results graphed.
Mass loss of metals  |
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| a) |
Which metal corroded the most? ____________________
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| b) |
How much iron corroded? ____________________ g
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| c) |
How much zinc was left? ____________________ g
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| d) |
What was the total mass of all the metals after 3 months? (Show your working).
__________ g.
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| e) |
Write an aim for this experiment.
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f) |
Why were the metals polished at the end of 3 months? |
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g) |
Why was the starting mass of each metal the same? |