金属的化学性质。 Flashcards

1
Q

在常温下能与氧气反应的金属元素有什么?

A

镁、铝

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2
Q

什么金属元素具有较好的抗腐蚀性?

A

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3
Q

在常温时,几乎不与氧气反应的金属元素有哪些?

A

铁、铜

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4
Q

在高温时不与氧气反应的金属元素是什么?

A

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5
Q

金属的活泼性排序?

A

镁、铝>铁、铜>金

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6
Q

置换反应的公式是什么?

A

单质+化合物—单质+化合物

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7
Q

置换反应需要满足的条件有哪些?

A

1、 是化学反应。
2、反应物为单质和化合物。
3、生成物为单质和化合物。

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8
Q

化合反应、分解反应、置换反应三者的关系是什么?

A

并列

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9
Q

二价铁离子是什么颜色的?

A

浅绿色

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10
Q

二甲价铜离子是什么颜色的?

A

蓝色

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11
Q

金属与稀酸反应的应用?

A

1、此类反应放热,其余条件相同,放热越多,金属越活泼。

2、其余条件相同,产生气泡速率越快,反应越剧烈,金属越活泼。

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12
Q

金属与金属化合物溶液反应的应用?

A

1A金属能置换出B金属,A金属活动性比B强。

2、若A能置换出B, B能置换出C,则活动性A >B >C。(A能置换出C)

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13
Q

单质铁与什么溶液反应时,生成物中铁元素的化合价仅为正二价?

A

金属化合物溶液。

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