1.简答题- (共1题)

⑴自然界CO2的来源途径有________________________(任写一点);
⑵任何物质都有两面性,CO2对人类的正面影响是促进植物光合作用等,不利影响有__________________________(任写一点);
⑶人类降低空气中CO2含量的研究有两个方向:一是减少CO2排放,二是增加CO2消耗,请写出一条你能做到的消耗CO2的方式或途径______________________________。
2.单选题- (共12题)
A.两者都属于物理变化 |
B.两者都属于化学变化 |
C.前者属于物理变化,后者属于化学变化 |
D.前者属于化学变化,后者属于物理变化 |

A.不可能收集到一瓶CO2,因为CO2可溶于水 |
B.选择B、C两种装置,导管b接导管d可收集到一瓶CO2 |
C.选择B、C两种装置,导管c接导管d可收集到一瓶CO2 |
D.选择A、B两种装置,导管a接导管。可收集到一瓶CO2 |
A.二氧化碳能与燃烧物发生化学反应 |
B.二氧化碳溶于水可生成碳酸 |
C.二氧化碳属于氧化物,是无色、无味的气体 |
D.二氧化碳的密度比空气大,一般情况下既不能燃烧,也不支持燃烧 |
A.二氧化碳可使害虫窒息死亡从而防治病虫害 |
B.二氧化碳产生温室效应,从而提高室温 |
C.二氧化碳能灭火,施用后可防止火灾 |
D.施用二氧化碳可促进植物的光合作用 |
A.先变蓝色后变紫色 | B.变红后颜色不再变化 |
C.先变无色后变红色 | D.先变红色后变紫色 |
A.煤油在空气中燃烧产生火焰并冒黑烟 |
B.浸透水的棉花球接触酒精灯火焰立即燃烧 |
C.铁丝在纯氧中燃烧发出白光 |
D.甲烷与空气充分混合遇明火一定会爆炸 |
A.存放时要露天放置,紧密堆积 |
B.搬运取用时要轻拿轻放,不能摔、砸和撞击 |
C.运输时,避开人口稠密区 |
D.生产厂房、仓库等建筑物与周围建筑物之间要留有足够的防火距离 |
A.乙醇汽油中添加的乙醇属于可再生能源 |
B.人类通过化石燃料获得能量的过程是物理变化 |
C.将煤球制成“蜂窝煤”是为了增大与空气的接触面积,使其燃烧更充分 |
D.我国南海海底储藏了大量“可燃冰”,它将成为替代化石燃料的新能源 |
3.选择题- (共5题)
What Theresa Loe is doing proves that a large farm isn't a prerequisite for a modern grow-your-own lifestyle. On a mere 1/10 of an acre in Los Angeles, Loe and her family grow, can(装罐)and preserve much of the food they consume.
Loe is a master food preserver, gardener and canning expert. She also operates a website, where she shares her tips and recipes, with the goal of demonstrating that everyone has the ability to control what's on their plate.
Loe initially went to school to become an engineer, but she quickly learned that her enthusiasm was mainly about growing and preparing her own food. “I got into cooking my own food and started growing my own herbs (香草) and foods for that fresh flavor,” she said. Engineer by day, Loe learned cooking at night school. She ultimately purchased a small piece of land with her husband and began growing their own foods.
“I teach people how to live farm-fresh without a farm,” Loe said. Through her website Loe emphasizes that “anybody can do this anywhere.” Got an apartment with a balcony (阳台)? Plant some herbs. A window? Perfect spot for growing. Start with herbs, she recommends, because “they're very forgiving.” Just a little of the herbs “can take your regular cooking to a whole new level,” she added. “I think it's a great place to start.” “Then? Try growing something from a seed, she said, like a tomato or some tea.”
Canning is a natural extension of the planting she does. With every planted food. Loe noted, there's a moment when it's bursting with its absolute peak flavor. “I try and keep it in a time capsule in a canning jar,” Loe said. “Canning for me is about knowing what's in your food, knowing where it comes from.”
In addition to being more in touch with the food she's eating, another joy comes from passing this knowledge and this desire for good food to her children: “Influencing them and telling them your opinion on not only being careful what we eat but understanding the bigger picture,” she said, “that if we don't take care of the earth, no one will.”


A.①② | B.②④ | C.①④ | D.③④ |
4.填空题- (共5题)
(1)猪粪便发酵产生沼气的过程属于________ (填“物理”或“化学”)变化。
(2)燃烧沼气用于煮饭、照明是将化学能分别转化为________能和________能。
(3)清洗沼气池时,要注意避免明火,否则容易发生________事故。
A.隔绝空气 B.移开可燃物 C.使可燃物的温度低于着火点
(1)草原着火时,常在着火点周围割除草,打出防火道 (_____)
(2)消防队员用冷水浇燃着的可燃物 (_____)
(3)将沙土铺在燃着的化学药品上 (_____)
(4)炒锅内油着火时,立即盖上锅盖 (_____)

(1)在上述实验中,鼓入空气的作用是____________________。
(2)下列情况下,可能不会发生爆炸的是_______(填序号)。
①金属筒不加盖时 ②塑料筒中装的是煤粉时
(3)面粉厂为了避免爆炸事故发生,应采取的安全措施有____________(写出一种即可)。
(1)石油炼制得到的产品中,常用作汽车燃料的是________(一种即可)。
(2)煤燃烧时排放出_______、______等污染物,溶于雨水会形成酸雨。
(3)天然气的主要成分是______,它燃烧时将化学能主要转化为_____能,燃烧时的化学反应方程式为______________________________。
5.实验题- (共2题)

(1)若A瓶中是二氧化碳,则燃着的蜡烛会立即___________。
(2)B瓶中的蜡烛突然十分明亮,则B瓶中的气体是___________。一段时间后,该蜡烛渐渐熄灭,其原因可能有____________(填序号)。
①氧气耗尽 ②温度降低 ③瓶内产生了二氧化碳 ④蜡烛着火点改变
C瓶倒扣住白磷时,出现的现象是_______________________________,发生反应的化学方程式为__________________________________________。

(1)写出图中标号仪器的名称:A是_______,B是_____。
(2)检查装置气密性的操作和现象是:先用夹子夹住导气管中的橡皮管,再向A中加入水至形成一段水柱,静置,若观察到_____________,说明气密性良好。
(3)检验CO2是否收集满的操作和现象是:将燃着的木条放在__________,若火焰熄灭,说明已经收集满。
(4)Na、Mg等活泼金属可以在CO2中燃烧。某同学收集到一瓶CO2后,通过实验验证Mg条能够在CO2中燃烧。下列物品中他需要使用的有______(填序号)。
①酒精灯 ②铁架台 ③坩埚钳 ④试管夹
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【1】题量占比
简答题:(1道)
单选题:(12道)
选择题:(5道)
填空题:(5道)
实验题:(2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:9
5星难题:0
6星难题:8
7星难题:0
8星难题:2
9星难题:2