Snow statues 2

Green house chemistry Safety advice Do not ingest any of the chemicals, particularly the potassium hexacyanoferrate II and potassium hexacyanoferrate III if these are used. Wash off any spillages in contact with skin immediately and wear safety spectacles. This movie clip follows on from the previous one showing the results of the snow statue experiments after 24 hours. There is a brief discussion at the end of the clip of some of the factors involved in producing a good cardboard snow statue. In order to carry out this experiment at home you need access to a tiny amount of potassium ferrocyanide, aka potassium hexacyanoferrate II. You may be able to buy this online. I was able to buy 50g for 6 UK pounds. You may be able to take a saturated solution of sodium chloride to the chemistry department of your school if you attend one and ask them to add 2 drops of a 0.1M solution of potassium hexacyanoferrate II to it. Potassium hexacyanoferrate II is one of the chemicals used in commercial cooking salt or household table salt and thus there is very low risk involved once the tiny amount has been added to the saturated sodium chloride solution. Lot's of interesting snow statues and snow scene experiments can be safely carried out once you have acquired your stock solution. Just remember to use pure salt, such as sea salt with no additives added when making up your saturated solution of sodium chloride. Have fun with chemistry An explanation of the formation of the snow crystals is given here https://melscience.com/GB-en/chemistry/experiments/xmas-tree/ or here https://melscience.com/GB-en/chemistry/experiments/xmas-v2_xmas-tree/ and a nice time lapse of the procedure here https://melscience.com/SA-en/articles/homemade-christmas-tree/