初三化学东城期末测试选择
Authored by 晓娜 龚
Chemistry
9th Grade
Used 1+ times
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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
分类回收垃圾
使用一次性木筷
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