My favorite subject in this semester.

Choose a favorite subject isn't complicated for me, I always prefer practical classes above teoric classes, this semester I had just one practical class: Techniques of laboratory, i really love this class, is about how use properly the materials in the lab and learn how they work, in the lab, all the students need to follow some rules, rules like use apron, always fasten the hair, and sometimes (depends of the material what they handled) the student need use protective eyewear.

Through the semester we have done some "basic" chemical reactions (solvent extraction, distillation, among others) reactions basics from the view of a teacher or an expert in the matter, but like students of first year, these activities was really amazing and educational. My favorite activitie on this subject was "TRITATION", this technique consist in discover the concentration of a solution from other solution with acquaintance concentration, my history with this technique is a little curious, when I realize for first time, I can't do it well, of course, I get a bad grade for that, but I have the oportunity of doing one more time, so I study hard and practice a lot of times, then when I do it for second time, I was ready and finally I can do it well, and increase my grade.