1.简答题- (共2题)
(1)写出一氧化碳与一氧化氮反应的文字表达式:__________________。
(2)列举提高空气质量的另外两个措施_______________________。

(1)指出仪器名称:①_______________ ②_______________。
(2)若用氯酸酸钾制取氧气,应选用的的发生装置是________(填字母)。收集较纯净的氧气应选_____________(填字母)。写出该反应的文字表达式_______________________________。
(3)若用过氧化氢制取氧气,还需要用到_____________(填药品名称),其起____________作用,能否用高锰酸钾制取氧气后的剩余物代替该物质_________(填“能”或“否”)。写出用过氧化氢制氧气的反应的符号表达式___________________________。
(4)用集气瓶收集氧气,验满的方法是_____________________________,若用F装置收集该气体,则气体从______端进入(填“c”或“d”)
(5)实验结束后,有人问:“我用带火星的木条伸入集气瓶内,为什么不会复燃?”请你推测导致这种现象的可能原因 (写一个)。
2.单选题- (共6题)
A.⑤⑦③②①④⑥ | B.①⑦③②⑤④⑥ | C.⑦②③①④⑤⑥ | D.⑦③①②④⑥⑤ |
A.把盛有红磷的燃烧匙伸人盛有氧气的集气瓶中,磷立即燃烧 |
B.硫在空气中燃烧,发出蓝紫色火焰 |
C.木炭在氧气中燃烧比在空气中燃烧更旺,发出白光,并放出热量 |
D.红磷在氧气中燃烧生成一种白色气体 |
A.易溶于水 | B.可能极易与氧气反应 | C.易与水反应 | D.有害无利 |
3.选择题- (共1题)
The food in White Rose Restaurant was cheap and good, but nobody seemed to want to eat there. There were very few people going to eat there. The owner was very worried about it.
Then he thought of a good idea. A few weeks later, his restaurant was always full of men and their girlfriends. Whenever a gentleman came with a lady, a kind waiter would give each of them a beautiful menu. The menus looked exactly the same on the outside, but there was an important difference inside. The menu that the waiter handed to the man gave the correct price for each dish and each bottle of wine, while the menu that he handed to the lady gave a much higher price! So when the man calmly ordered dish after dish and wine after wine, the lady thought he was much more generous than he really was! The man could make a good impression on the lady.
4.实验题- (共1题)

(1)写出实验室用过氧化氢和二氧化锰制取氧气的文字表达式:________________
二氧化锰在反应中作 剂,其作用是 ______。
(2)分析改用乙装置后,带火星的木条较易复燃的原因:______________________。
(3)老师又设计了另一个改进的丙装置,带火星的木条也易复燃。根据(2)推测的原因,分析浓硫酸的作用: 。
(4)你还能写出实验室用到二氧化锰制取氧气的文字表达式吗?_____________。
-
【1】题量占比
简答题:(2道)
单选题:(6道)
选择题:(1道)
实验题:(1道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:2
5星难题:0
6星难题:2
7星难题:0
8星难题:4
9星难题:1