【題目】下列說法正確的是( )。

A．有氧氣參加的反應都是化合反應

B．化合反應一定是氧化反應

C．所有化合反應的共同特征是兩種物質(zhì)反應而生成另一種物質(zhì)

D．無論是否有氧氣參加，只要由兩種或兩種以上的物質(zhì)生成另一種物質(zhì)的反應，就屬于化合反應

【答案】D

【解析】

試題分析：A．有氧氣參加的反應不一定是化合反應，如蠟燭燃燒。B．化合反應不一定是氧化反應。如生石灰與水反應生成熟石灰。C．所有化合反應的共同特征是兩種物質(zhì)（或兩種以上的物質(zhì)）反應而生成另一種物質(zhì)。D．化合反應是指兩種或兩種以上的物質(zhì)生成另一種物質(zhì)的反應，不一定需要氧氣參加。

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