1.简答题- (共1题)

(1)天然气是一种非常重要的化石燃料,我国实施的“西气东输”计划输送的就是天然气.为了防止燃气泄漏发生危险,可在家中安装报警器(如图),当报警器接触到一定量的泄漏气体时,会发出响声.若家中使用的燃料是天然气,试判断报警器要装的位置应如图中__________(填A或B)所示,简述你的判断理由.__________________________.
(2)将“井喷”气体通入水中,滴入紫色石蕊试液,溶液变红,你能据此判断硫化氢是一种酸性气体吗?为什么?________________________
(3)若你遇到类似的“井喷”事故,根据你所学的知识以及上文所介绍的有关硫化氢的知识,简述怎样尽量使自己少吸入H2S而避免中毒?(只要说出一种行之有效的方法即可)_______
(4)硫化氢是一种可燃性气体,在氧气中燃烧生成二氧化硫和水.请写出相应的化学方程;________________________________________________.
(5)实验室制备硫化氢气体可以采用黑色FeS固体与稀硫酸反应,其反应装置所需的主要仪器有__________________,硫化氢气体可以采用_________方法收集;在实验中的尾气可以用________溶液吸收,反应类型为__________(四种基本反应类型).
2.计算题- (共1题)
3.单选题- (共18题)
A.CO2与N2 | B.CO2和NO2 | C.CO2和O2 | D.CO2和NH3 |
A.大量燃烧含硫煤 | B.植物的光合作用 |
C.人和动物的呼吸 | D.利用太阳能烧水 |
A.已作为“绿色环保溶剂”能代替许多有害、有毒、易燃的有机溶剂 |
B.超临界CO2流体是一种特殊的物质,带火星的木条可以在其中复燃 |
C.CO2是自然界中存在的物质,它参与自然界的碳元素循环 |
D.超临界CO2流体与固体干冰的组成相同 |
A.内墙涂料 | B.外墙涂料 | C.屋顶涂料 | D.地板涂料 |
A.耐用 | B.质轻 | C.易加工 | D.不易受腐蚀 |
A.使用乙醇汽油能减少有害气体的排放,是一种改善环境的清洁能源 |
B.燃料中的乙醇可以通过粮食发酵或化工合成等方法制得 |
C.乙醇汽油是一种新型的化合物 |
D.推广乙醇汽油可以减少石油的消耗,缓解石油紧缺 |
①电解法:2H2O

②甲烷转化法:CH4+H2O

③水煤气法:C+H2O

④碳氢化合物热裂法:CH4

⑤设法将太阳光聚焦产生高温使水分解:2H2O

⑥寻找高效催化剂使水分解产生氢气
如果将来人类广泛使用氢气作为能源,那么上述6种方法中你认为可行的有 ,并请简述不可行方法的原因。
A.烹饪时产生的油烟 | B.石材释放出的有害放射性气体氡 |
C.水果散发出的香味 | D.劣质粘合剂释放出的甲醛等有害物质 |
A.绿颜色的营养食品 | B.有叶绿素的营养食品 |
C.经济附加值高的营养食品 | D.安全、无公害的营养食品 |

A.长颈漏斗下端管口产生气泡 | B.瓶中液面上升明显 |
C.长颈漏斗内有液面上升 | D.注射器内有液体 |
4.选择题- (共2题)
One a February day during an unusually mild winter, I found myself missing the snowy beauty. I enjoyed the feeling that comes from watching snow fall gently from heaven while I'm cosy inside with a good fire burning in the stove. But there were more serious concerns, like the lack of rainfall making our woods more accessible to summer forest fires. Local ski fields and hotels, all dependent on a snowy season, felt sorry for the vacant lifts, empty restaurants and unused snowmobiles.
Then I happened to see three little robins (知更鸟) fly into our yard. What were they doing here? West of us, in the Willamette Valley, wild flowers burst this time of year. But here in central Oregon, even if a groundhog ( 土拨鼠) had wanted to appear, it couldn't have broken through the frozen earth. And yet, these robins had arrived.
Their presence brought me a flow of happiness. It felt like a celebration as I dug into my bag of birdseed and spread a handful on the ground. Above me, the deep blue sky was cloudless, perfectly quiet but for some smoke from a neighbor's chimney. The lively cold made the air fresh and clean.
My robins jumped lightly toward the seed. My soul jumped with them, feeling equally carefree. Caught up in the moment of spring fever, I checked our snowless flower beds. To my delight, I spotted a green branch sticking out through the brown soil.
Despite the cold, I wasn't ready to go back inside. Just a short meeting with those robins had renewed my spirit. The next day I would return to my outdoor work with a cheerful heart and a hopeful eye for these signs of spring.
阅读下面短文,根据句意或提示,在空格处填入一个适当的词,每空一词。
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5.多选题- (共1题)
6.填空题- (共8题)
(1)吊白块加热时发生反应的类型是__________反应;
(2)甲醛的化学式为CH2O,它属于__________(填“无机物”或“有机物”);
(3)甲醛的物理性质是_________________________________.
CH3OH等)


测定时间/min | 0 | 1 | 2 | 3 |
pH | 4.73 | 4.62 | 4.56 | 4.55 |
(1)从测定的数据可知:在测定的4 min内酸雨水样的酸性是_______(“减弱”或“增强”).
(2)在测定的时间内,酸雨水样pH发生变化的主要原因是:酸雨中的亚硫酸(化学式是
H2SO3)被空气中的氧气氧化为硫酸的缘故.请写出反应的化学方程式:_____________.

A.按照实验要求,安装好实验仪器. |
B.检查仪器装置的气密性:关闭_______,向_______中加入足量的水,若漏斗中的液面能_________,并_________,则说明原装置气密性良好. |
C.装药品:先将_______放在多孔隔板上,打开________后,向_______中注入____________,发生反应放出氢气. |
D.验纯气体:因为氢气是可燃性气体,进行性质实验之前务必进行________,用排水法收集一试管氢气,用拇指堵住试管口,移近火焰,再移开拇指点火.如果听到_______.则表示氢气不纯,需要重新收集并验纯;如果只听到很微弱的“噗”的声音,则说明氢气已经__________. |
F.结束实验:关闭_______,产生的氢气无法从导气管中逸出,试管中的气压_______,就会将______由长颈漏斗下端管口压回______中,从而使______与______分离,反应停止.
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【1】题量占比
简答题:(1道)
计算题:(1道)
单选题:(18道)
选择题:(2道)
多选题:(1道)
填空题:(8道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:5
7星难题:0
8星难题:17
9星难题:6