Chemistry

9th

grade

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hoa 9 bai oxit

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10 questions

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  • Multiple Choice
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    30 seconds
    1 pt

    Oxit được chia làm mấy loại?

    2

    3

    4

    5

  • Multiple Choice
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    30 seconds
    1 pt

    Chất nào hòa tan trong nước tạo thành dung dịch làm quỳ tím hóa xanh?

    CuO


    SO3SO_3

    Na2ONa_2O

    SiO2SiO_2

  • Multiple Choice
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    45 seconds
    1 pt

    Nhóm bazo nào sau đây là kiềm?

    Cu(OH)2, Ba(OH)2Cu\left(OH\right)_2,\ Ba\left(OH\right)_2

    KOH, Ca(OH)2KOH,\ Ca\left(OH\right)_2

    Fe(OH)3, Cu(OH)2Fe\left(OH\right)_3,\ Cu\left(OH\right)_2

    Fe(OH)3, NaOHFe\left(OH\right)_3,\ NaOH

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