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國二上理化6-5分子與化學式課文重點複習
請輸入你的E-MAIL方可作答, 作答方式: 針對( )填入正確答案, 共10格,滿分100分(可重複作答)
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化學式通常將具有特定性質的原子團寫在( )面.
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5個水分子應表示為( )
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( )是由不同原子以固定比例組成的純物質。
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硝酸鉀的化學式為( )
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含碳. 氫 . 氧三種元素的化合物,化學式是按照(___ ___ ___)的順序書寫. [答案間須空1格]
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由金屬元素與非金屬元素組成的化合物,金屬符號寫在( A )面,非金屬符號寫在( B )面來表示化學式. 則AB=(____ ____)[答案間須空1格]
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含氧的化合物中,氧的符號寫在( )面, 表示化學式.
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金屬元素組成的純物質,直接以( )表示化學式.
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( )是由同一種原子組成的純物質。
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( )是由2個或多個原子組成,是表現物質特性的最小粒子。
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