The exercise served to understand what liquids, including three different solutions of water and salt, oil,Coke and lemonade, had higher density and lower density which had tubes and mixing them in looking at the different layers. The day after the class is back in the lab to see what substances had finished stratify. After having observed, went in computer classroom because the teacher wanted to show a website where you can do the same experiments on line.

http://www.golabz.eu/labs

The experiment is to mix salt, earth, water and iron filings and see which mixtures which are heterogeneous and homogeneous. After we vatto a version of the same exercise with the filter paper, a pen and a pen. I and my group we made marks on paper and we did absorb alcohol. It turned out that the incgiostro of two pens was heterogeneous and that of two highlighters homogeneous.

We have observed how, by heating the ice, this stop temperature until it has become completely water ( thermal park ).

Then we observed the process of distillation of a mixture of water and ethyl alcohol. The machine separates the substances according to their boiling temperature .