De kiem tra Hoa 8 chuong oxi khong khiLH 0976324285

<span class='text_page_counter'>(1)</span>Trường THPT lại Sơn KIỂM TRA VIẾT Lớp......... MÔN: HÓA HỌC Câu 1(2đ): Hãy cho biết không khí gồm có những thành phần nào? Thế nào là sự oxi cháy? Thế nào là sự oxi hóa chậm? Nêu các điều kiện phát sinh và dập tắt sự cháy? Câu 2(1đ): Thế nào là phản ứng hóa hợp, thế nào là phản ứng phân hủy? Cho ví dụ Câu 3 (2đ): Gọi tên các oxit sau Oxit Tên Oxit Tên CuO Fe2O3 P2O5 N2 O5 Na2O Al2O3 CO2 SO3 Câu 4(2đ) a. Lập công thức oxit của đồng (Hóa trị I) với oxi b. Lập công thức hóa học của photpho (Hóa trị III) Câu 5(3đ): Đốt cháy 12,8g đồng trong bình chứa 3,36 lít khí oxi (đktc) sinh ra CuO a. Viết phương trình hóa học xảy ra b. Sau phản ứng chất nào còn dư, khối lượng chất dư là bao nhiêu? c. Tính khối lượng chất tạo thành. (Cho Cu = 64; O = 16) BÀI LÀM ...................................................................................................................................................................................................................... ...................................................................................................................................................................................................................... ...................................................................................................................................................................................................................... ...................................................................................................................................................................................................................... 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