SALT&PEPPER CHALLENGE

Salt&pepper challenge

How to separate a salt&pepper mixture

Salt & pepper mixed!!!!

Mr Noluck mistake

01

+ info

Mr Noluck has spilled the content of his salt and pepper shakers on the table!! The salt and pepper are now mixed!. There is our experimental protocol to get back the salt and the pepper. There is 10 g of salt and 3.82 g of pepper. (72.4 % salt; 27.6 % of pepper)

third try

04

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Salt can be disolved in water, but no pepper. We add water in 6 g of mixture

Magnetism

our first try

02

+ info

Our first idea was trying with a magnet. Nothing happens...

In the filter, we have pepper

filtering the mixture

05

+ info

Once filtered the mixture, we have pepper

Electricity

second try

03

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Thanks to our Turkish colleagues, we now that it's possible to separate it with electricity. But it could be a hard work....

Pepper is ready

Drying pepper

06

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We dried the pepper and weigh it. We've got a 8.4 % of pepper. Quite far from the initial 27.6%

Solubility

07

CRISTALIZING SALT

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In this moment, salt is cristalizing

Conclusions

Salt and pepper are separated by cristalization. We've learnt several things:

• We can separate it but not completely: we have invented salt flavoured with pepper.
• Salt cristalize in nice cubes
• Pepper have some electrical properties

Salt and pepper are a heterogeneous mixture