L4s Make Copper Sulphate Crystals

Friday 19th October 2018

L4’s have recently been awarded their bunsen burner licences in chemistry, and set out to do their first big experiment following this: to make copper sulphate crystals.


In this experiment, an insoluble metal oxide (copper oxide) is reacted with a dilute acid (sulphuric acid) to form a soluble salt (copper sulphate). Copper oxide, a black solid, and colourless dilute sulphuric acid react to produce copper sulphate, giving a characteristic blue colour to the solution, and the crystals that can be created from this.


The girls used bunsen burners to heat the sulphuric acid, and added the copper oxide powder to this, still over heat.

They then filtered their solution, using a funnel and filter paper, and left it to evaporate.


After a few days, here are what the results looked like:




Great work L4, and well done for achieving your bunsen burner licences.


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