3. Investigate the reactivity of metals

Question 1

Investigate the reactivity of metals

Answer 1

Apparatus and chemicals
Test-tube rack
Test-tubes x3
Copper(II) sulfate solution (0.5 mol/dm3)
Magnesium sulfate solution (0.5 mol/dm3)
Zinc sulfate solution (0.5 mol/dm3)
Iron(II) sulfate solution (0.5 mol/dm3)
Pieces of copper foil (3 small pieces approx. 1 cm2)
Zinc (3 small granules or pieces of foil approx. 1 cm2)
Iron (3 small ungalvanised nails)
Magnesium ribbon (3 small pieces 1 cm length)

Question 2

method for the reactivity of Cu

Answer 2

Method

Half-fill separate test-tubes with magnesium sulfate, iron(II) sulfate and zinc sulfate solutions.
Add a piece of copper to each test-tube.
Leave for 3 minutes, record observations.

Question 3

method for reactivity for iron

Answer 3

Method

Half-fill separate test-tubes with copper(II) sulfate, magnesium sulfate and zinc sulfate solutions.
Add a piece of iron to each test-tube.
Leave for 3 minutes, record observations.

Question 4

method for reactivity of zinc

Answer 4

Method

Half-fill separate test-tubes with copper(II) sulfate, magnesium sulfate and iron(II) sulfate solutions.
Add a piece of zinc to each test-tube.
Leave for 3 minutes, record observations.

Question 5

method - reactivity for Mg

Answer 5

Method

Half-fill separate test-tubes with copper(II) sulfate, iron(II) sulfate and zinc sulfate solutions.
Add a piece of magnesium to each test-tube.
Leave for 3 minutes, record observations.