Measure 25 cm3 of Sulphuric acid, using a measuring cylinder - 1, Pour the acid from the measuring cylinder into a beaker - 2, Put the beaker on top of a gauze, above the Bunsen burner - 3, Turn on the gas and heat up the acid. Do not leave it to boil - 4, Turn off the Bunsen burner and leave the beaker to cool down - 5, Very carefully, add a spatula of copper oxide - 6, Wait for it to stop fizzing and then add another spatula of copper oxide - 7, Keep adding small spatulas of copper oxide until you can’t see any more fizzing - 8, Filter the mixture into a conical flask - 9, Pour the blue copper sulphate into an evaporating basin - 10, Put the evaporating basin on the windowsill - 11, Leave it on the windowsill for about a week to get crystals - 12,

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