-put 50 ml of 2molL NaOH into a beaker.
-heat on bunsen burner until NEARLY boiling - Stir as getting > then take off the heat.
-Add a spatula of zinc powder.
-Heat lightly for 3 min, with the coin in - Stir as heating
-Take the coin out with tongs
-Rinse coin under water to remove chunks of zinc.
-Wave coin in the blue flame using tongs
Observations
the coin started off with the color of copper. After putting 50ml of 2molL⁻1 Nat OH into a beaker. we heated it lightly to the point where it was NEARLY boiling, whilst stirring. We added a spatula of zinc powder, heated it up again for a couple of mins with the coin in while stirring. It turned out to be the color silver. We took it out and rinsed it underwater to see if there are still remnants of zinc remaining. Lastly, using the tongs we waved it on top of the blue flame then it turned to gold.
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