1 – Amaliy mashg`ulot. Mavzu

4-Amaliy mashg’ulot.
Mavzu: Kislorod olish va uning xossalarini o‘rganish.

Darsning maqsadi: Kislorod olish va uning xossalari bilan tanishish.

Kerakli jihozlar va reaktivlar: kaliy permarganat, suv, shtativ, probirkalar, quruq yoqilg`i, gaz o`tkazgich nay o`rnayilgan tiqin, kolba, menzurka, stakanlar.

Ishning borishi: Probirkaning 1/4 qismiga kaliy permanganat solinadi. Gaz o‘tkazish nayi o‘rnatilgan tiqin bilan probirka berkitiladi. Asbobni temir shtativga o‘rnatiladi. Тayyorlangan asbobni germetik va mahkam o‘rnatilganligini tekshiriladi. Probirkani kaliy permanaganat turgan qismini spirt lampasi bilan qizdiriladi.

Kislorod ajralib chiqayotganligini cho‘g‘i yallig‘lanib turgan cho‘p bilan tekshirib

ko‘riladi. Cho‘g‘lanib turgan cho‘pning alangalanib ketishi kislorod ajralib chiqayotganini tasdiqlaydi. Bu holda ajralib chiqayotgan kislorod havoni siqib chiqarish yoki suvni siqib chiqarish yo‘li bilan yig‘ib olinadi.

Kislorod olish uchun tayyorlangan asbob rasmini chizing

Xulosa.

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Sana ______________20__yil