初二下册第5章

初二下册第5章

7th Grade

16 Qs

quiz-placeholder

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初二下册第5章

初二下册第5章

Assessment

Quiz

Science

7th Grade

Medium

Created by

JING YAO CHAN

Used 28+ times

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16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列哪项说明氧气的特性是错误的

氧气是无色的

氧气是无味的

常温下氧气可以是液体状态

氧气的密度大于空气

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

氧气______溶解于水

容易

难以

不会

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

氧气可以_____。

助燃

灭火

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

氧气液化后是什么颜色?

白色

蓝色

粉色

绿色

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

凝固后的氧气是什么形状?

正方形

圆形

螺旋状

雪花状

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

工业上要大量制取氧气的方法是使用分离空气法。冷却成液体,再升温。从而得到氧气和______。

氮气

氢气

氦气

氩气

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

氧气比其他气体来的_____。

不活跃

活跃

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