Equipment
Safety Glasses
Copper Metal
Beaker
Hotplate
Tongs
Bunsen
2moil-1 Sodium Hydroxide
zinc powder
Aim: Copper - Gold
Use a small Piece of Copper metal, Cleaned with Sand Paper. Pour about 80 ml of 2moil -1 Sodium Hydroxide into a Beaker and Warm on a Hot plate to 60c. Add the copper metal, then place a spatula full of zinc powder into sodium Hydroxide solutions, Leave for 5-10mins until metals turns a silvery colour. Remove metal from beaker with tongs and heat in a Bunsen Flame using tongs for 30second, Colour Appear.
Zinc powder from Zinc Oxide in the presence of Sodium Hydroxide and Coat the copper giving a silver apperance, Heating the Zinc Oxide Coated copper forms brass, metal Alloy giving a Gold appearaces.
