Monday 6 February 2012

Physics Lesson - Ice and Salt

Mummy and Lucy are having one of their regular science experiments. Lucy has noticed that folks put salt down when it is icy and asks Mummy why.

Mummy has the Ice and Saxo out in the blink of an eye so she can demonstrate to Lucy how salt can reduce the freezing point of Ice. She gets Lucy to add salt to one glass of Ice whilst the other one is a control.

After a couple of minutes it is clear that ice with the salt added is melting and the pure ice is not.

That is a pretty conclusive science experiment. Theory proven!

Lucy speculates that if she adds some salt to Mummy she might not have to wear her hat inside to keep warm.

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