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初三化学东城期末测试选择

Authored by 晓娜 龚

Chemistry

9th Grade

Used 1+ times

初三化学东城期末测试选择
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21 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

空气成分中,体积分数约占78%的是

氮气

氧气

稀有气体

二氧化碳

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

铜元素的符号是

Zn

Co

Cu

Ca

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

地壳中含量最多的元素是

Fe

Al

Si

O

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

五氧化二氮的化学式是

5O2N

O5N2

N2O5

2N5O

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列物质中,属于氧化物的是

O2

NH3

NaOH

H2O

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列属于氮气化学性质的是

无色、无臭

密度比空气的略小

不易与其他物质反应

难溶于水

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列做法不符合"低碳"理念的是

使用太阳能

乘公共交通出行

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