Science – Crystal Crazy!

Science – Crystal Crazy!

Year 7 – Crystal Gardens. Mrs Preece’s Year 7 group have been growing Crystals Gardens in a beaker. The class made a “water glass”  solution of sodium silicate . Adding more water forms a dilute solution of sodium silicate which the metal salts are dropped into. When you put the crystals of metal salts into the sodium silicate solution they seem to act like seeds and grow long shoots. These long shoots are long tubes of the metal silicate and the colour depends upon the metal being used.

Year 9 – Copper Sulphate Crystals. Year 9 and Year 10 have been conducting a number of their GCSE required practicals in Science. They have successfully made crystals of hydrous Copper Sulphate, a soluble salt, from a reaction between Copper Oxide and Sulphuric Acid. They had to use the techniques of filtering the excess Copper Oxide and evaporating the water also formed in the reaction to make the biggest crystals they could.