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pynguyenthanhhoi
2 năm trước
Câu 1. Thế nào là sự oxi hóa? Cho ví dụ 2 hiện tượng có sự oxi hóa thường gặp trong đời sống. Câu 2. Trong các dãy chất sau, dãy nào chỉ có các oxit? A. SO2, CH4O, P2O5. B. CO2, Al2O3,Fe3O4. C. CuO, Fe(OH)3, H¬2O. D. CO, ZnO, H2SO4.
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