Metal corrosion

This task is about fair testing and reading information from a graph.
10 gram 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
metal corrosion graph

Question

 a)  Which metal corroded the most?

    • Copper

    • Iron

    • Magnesium

    • Zinc

Question 1Change answer

b)  How much iron corroded?  g.

Question 2Change answer

c)  How much zinc was left?  g.

Question 1Change answer

d)  What was the total mass of all the metals after 3 months? (Show your working).
 g.

Question 1Change answer

e)  Write an aim for this experiment.

Question 1Change answer

f)  Why were the metals polished at the end of 3 months?

Question 1Change answer

g)  Why was the starting mass of each metal the same?
Published on Assessment Resource Banks (https://arbs.nzcer.org.nz)