hanzi 10

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Question Answer
过氧化钠
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Sodium Peroxide
氢气
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hydrogen
氧化铜
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Copper oxide
反应
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reaction
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oxygen
还原
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reduction
氧化
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Oxidation
试管
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test tube
溶液
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Solution
滤液
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filtrate
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dilute
硝酸
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Nitric Acid
溶解
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Dissolve
火焰
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flame
得到
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get
加入
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Join
观察
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observe
上述
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Above
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drop

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