Christmas Science | It’s feeling cold | The endothermic reaction

Warning: Ammonia is given off from the reaction so warn pupils with breathing difficulties to stand back and perform the demonstration in a well ventilated laboratory. Barium hydroxide is corrosive so beware of any spills and deal with according to guidance.
Winter is coming and Christmas is nearly here to get us ready here’s a endothermic reaction to make us feel cold!
This is an example of an endothermic reaction. It will cool down sufficiently to freeze a small amount of water, which is between the beaker that chemicals are reacting in and a small wooden block.

[@NihouNi]

Really looking forward to trying this for home ed group in the run up to Christmas. Thanks lots for posting it.

[@hermitthecrab3765]

Santa goes to Australia when it's 40 degrees for Christmas

[@STEMLearning]

That's great Neia G, let us know how you get on!

[@umerbutt4972]

Great vid lad keep it up son

[@rashadreyaz8456]

Hi, is it possible to freeze 20-30ml of refrigerated water (12°C) if we place the water inside a test tube and put it inside the beaker? What quantity would be needed? (Of chemicals)

[@pauls0416]

MERRY CHRISTMAS!!!!! :) Well, it's June right now but I am always in the Christmas spirit! I've got a cryocooler sitting next to me and the end of it has reached -205 C

[@BurkenProductions]

Presents are opened on xmas Eve not xmas Day.