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8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Phân tử acid gồm có
Back
Một hay nhiều nguyên tử hydrogen liên kết với gốc acid.
2.
FLASHCARD QUESTION
Front
Chất nào sau đây là acid: NaOH, CaO, KHCO3, H2SO4?
Back
H2SO4
3.
FLASHCARD QUESTION
Front
Công thức hóa học của acid trong dạ dày là
Back
HCl
4.
FLASHCARD QUESTION
Front
dd nào sau đây kh đổi giấy quỳ tím thành màu đỏ: Nước ép khế, Nước chanh, Nước muối, Giấm ăn?
Back
Nước muối
5.
FLASHCARD QUESTION
Front
Dung dịch nào sau đây làm quỳ tím đổi từ màu tím sang màu đỏ? H3PO4, NaOH, NaCl, Ca(OH)2.
Back
H3PO4
6.
FLASHCARD QUESTION
Front
Dung dịch nào sau đây làm quỳ tím đổi từ màu tím sang màu đỏ? NaOH, HNO3, Ca(OH)2, NACl
Back
HNO3
7.
FLASHCARD QUESTION
Front
Chất nào sau đây là base? NaOH, HCl, NaCl, H2SO4
Back
NaOH
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