Chemistry

7th -

9thgrade

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課題八 化學反應與能量

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  • 1. Multiple Choice
    1 minute
    1 pt

    下列哪項正確顯示碘的標準態?

    A. I(s)

    B. I2(s)

    C. I2(l)

    D. I2(g)

  • 2. Multiple Choice
    1 minute
    1 pt

    下列哪個過程是吸熱的?

    A. 炭的燃燒

    B. 利用熟石灰降低土壤的pH值

    C. 把辛烷在無氧的環境下加熱以生成丙烷

    D. 把氯化鈣與硫酸鈉混合以生成硫酸鈣

  • 3. Multiple Choice
    1 minute
    1 pt

    下列哪個反應有對體系作功?

    A. 2O3(g) → 3O2(g)

    B. H2(g) + O2(g) → H2O2(l)

    C. H2(g) + Br2(l) → 2HBr(g)

    D. Ca(s) + 2H2O(l) → Ca(OH)2(aq) + H2(g)

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