Hello guys,
Today we started revising the properties of metals and non-metals and ways of separating a metal from its ore (Electrolysis, displacement & smelting) because in the quiz we did on quizstar we were asked about them and some went: "¡UH?!" (We haven't done yet, so...).
Andy explained us how electrolysis work with a little experiment: having electricity go through a solution of salt in water. Chlorine gas and sodium were produced, but sodium reacted very quickly with the water producing sodium hydroxide. We couldn't smell the chlorine because it is a poisonous gas (the nazis used it in concentration camps), so be careful if you do it at home!
We also did something that isn't related to the topic: Who to get the cork out of an empty wine bottle? We used a plastic bag. We stuck it inside the bottle except for the mouth, we blew the bag up and then took the bag out and... the cork went out with it!
Today's was a fun class indeed.
See ya'.
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