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概念重溫-第4章-2-碳酸鈣的化學變化

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概念重溫-第4章-1-白堊，石灰石和大理石

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概念重溫-第3章-2-食鹽的測試和電解海水

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概念重溫-第3章-1-過濾，結晶和蒸餾

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概念重溫-第2章-大氣

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概念重溫-第1章-化學導論

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Chemistry tutorial-Ch61-4-Test for gases and water

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化學教室-第61章-3-氣體和水的試驗

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Chemistry tutorial-Ch54-11-Membrane cell

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