
志趣化學(初二第二單元)

Quiz
•
Chemistry
•
9th Grade
•
Easy
Kenneath Ieong
Used 2+ times
FREE Resource
21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列描述中,属于物理性质的是
铁丝在氧气中燃烧时火星四射
氮气在通常情况下没有颜色
氧气可以支持燃烧
二氧化碳能使澄清石灰水变浑浊
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
按現有認知,自己完成以下化學方程式及文字表達式的書寫
淡黃色粉末在空氣中燃燒
氯酸鉀與二氧化錳混合受熱分解
暗紫色固體受熱分解
銀白色固體只能在氧氣中燃燒
已完成所有化學方程式和文字表達式後才按此鍵
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有甲、乙、丙、丁四個集氣瓶,分別盛有空氣、氮氣、氧氣、二氧化碳中的一種氣體。用一根燃著的木條分別插入瓶中,依次觀察到:甲、丙集氣瓶中火焰熄滅;乙瓶中集氣瓶火焰更旺;丁中集氣瓶燃燒正常燃燒;後往甲、丙兩瓶分別倒入澄清石灰水,甲瓶中無明顯現象,丙瓶中的石灰水變混濁。則下列答案正確的是:
甲為氧氣
乙為二氧化碳
丙為氮氣
丁為空氣
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在圖所示裝置中,其中收集氫氣(O2)時可選用:
①和②
②和③
①和③
①和⑤
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
做铁丝在氧气中燃烧的实验时,集气瓶底部要放少许细沙或水的原因是
使反应更激烈
使现象更明显
防止集气瓶底炸裂
防止火星四射
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
碳在空氣中燃燒的化學方程式
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
磷在氧氣中燃燒的文字表達式為:
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