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Toshkent viloyati quyi chirchiq tumani maktabining 7 – “ ” sinf o`quvchisi
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| bet | 7/8 | | Sana | 10.01.2024 | | Hajmi | 55,94 Kb. | | #134377 |
Bog'liq 7-Sinf KIMYO NAZORAT ISHI daftar 20227- Nazorat ishi
Mavzu: Suvning tarkibi. Xossalari tarqalishi, ahamiyati, ishlatilishi.ifloslanishi.
1- variant
1. 2 mol suvda nechta vodorod atomi bor?
2. 20 g vodorod to’la yonishi uchun necha gramm va qancha hajm O2 sarflanadi?
3. Suvning kimyoviy xossalarini yozing.
Kompetentlikni aniqlash uchun materiallar:
4.Nima uchun qish faslida muz suv yuzida qalqib yuradi?
5.Suv havzalarini tozaligini saqlash uchun qanday takliflar bera olasiz?
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Sana Ball Imzo
Sana Ball Imzo
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