thi nghiem hoa hoc-tai sao khong?

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toi rat thich nhung thi nghiem hoa hoc. Nam nay toi hoc lop 12, kien thuc dang rong mo trong tuong lai. toi thay dac biet la mon hoa o truong toi khong he co nhung buoi thi ngiem ngoai khoa. Dieu nay da lam thu nho tam hieu biet cua hoc sinh ve mon hoc thu vi nay. Cac ban biet khong, tuy co nhieu thieu thon ve kien thuc va `money`, nhung toi van co duoc 1 phong thi nghiem nho nho. Noi la nho boi vi no chi ven ven trong 1 chiec hom. Con viec co duoc hoa chat thi minh cung phai dung 1 so kien thuc ve hoa hoc. Vi du ban muon co qui tim de xac dinh do Ph cua 1 chat thi ban co the lay trong hoa cay dam but. Tuy no khong duoc nguyen chat nhung van co the dung duoc. Con muon co duoc HCl thi co the cho H2SO4 tac dung voi muoi an...con dung cu thi nghiem thi phai tan dung tat ca nhung chai lo thoi.Tat nhien ban van phai chu y den van de an toan. Cuoi cung chuc cac ban may man va dat duoc uoc mo trong tuong lai.


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