1.计算题- (共1题)
实验前 | 实验后 |
试管内固体物质的质量 | 试管内固体物质的质量 |
18.0g | 13.2g |
(1)得到氧气多少克________?
(2)最多能回收二氧化锰多少克________?
(3)回收后的一种物质可以作肥料,它属于______肥,要回收反应后的物质需要用到操作有哪些?
2.简答题- (共6题)
(1)上述材料中,___________是最常见的有机合成材料;
(2)铝表面易形成层致密的保护膜,其成分是___________;
(3)地壳中含量最高的金属是___________;
(4)为了防止水龙头生锈,其表面常镀一层铬,其防锈的原理是:___________。
(1)为使葡萄果实饱满、提高含糖量,在葡萄生长的中后期可适当施加硫酸钾、过磷酸钙等肥料,其中硫酸钾属于化学肥料中的____肥;
(2)酒精的用途是________________;
(3)用硫酸铜配制的农药波尔多液,可以防治葡萄生长中的病害。溶解硫酸铜时不宜用铁制容器,用化学方程式表示其原因:________;
(4)吸烟有害健康。香烟烟气中含有儿百种对人体有害的物质,如尼古丁、焦油、一氧化碳、二氧化碳等,其中与血红蛋白结合能力强的有毒气体是___________。
(1)由三种元素组成的一种盐(填化学式)_____________;
(2)活性炭具有很强的____________,可以除去冰箱内的异昧;
(3)碳酸氢钠是焙制糕点所用的发酵粉的主要成分之一,在医疗上它是治疗胃酸过多症的一种药剂,碳酸氢钠俗称____________;
(4)氯化钠的用途是________________。
(1)除去木炭还原氧化铜后所得固体中的氧化铜,可选择的溶液为______;
(2)冬天用煤炉取暖不当会导致煤气中毒。有人认为,在炉具上放盆水就可以有效防止煤气中毒,你对这种做法的看法是______。
(3)将铁粉放入硫酸锌和硫酸铜的混合溶液中,充分反应后过滤,向滤渣中加入适量的盐酸,观察到有气泡冒出,则滤液中一定含有的溶质是______。
(1)如图为电解水的装置。用___来检验b管中的气体,由此实验得出水是由_____组成的,b管中气体与a管中气体的质量比为___________该反应的化学方程式为___________;

(2)我市某水厂生产自来水的净化步骤如表示:向水中通入氯气,其作用是___________。
原水→加明矾→沉淀→吸附→沙滤→加氯气→净水
(1)不同的碱具有相似的化学性质,原因是_________________。
(2)同学们发现,用石灰浆粉刷墙壁,一段时间后墙面就变硬了,请用化学方程式解解释这一现象_________________;
(3)依据如图可知NaOH必须密封保存,否则在空气中要变质,如果要除去在空气中已变质氢氧化钠溶液中的杂质,应选择适量的下列物质______;
A.稀HCl | B.硫酸 | C.CaCl2 | D.Ca(OH)2 |
(4)现有:HCl溶液Ba( NO3)2溶液、Na2CO3溶液、CuSO4溶液,写出一个能与NaOH溶液反应的化学方程式_______,反应类型为______。

3.单选题- (共9题)
A.通常把pH<7的降雨称为酸雨 |
B.不同元素最本质的区别是质子数不同 |
C.露置于空气中的澄清石灰水,其成分不会发生变化 |
D.浓硫酸露置于空气中、溶质的质量分数会变大 |
A.空气的主要成分是氮气(78%)和氧气(21%) |
B.饼干在空气中变软是因为空气中含有水蒸气 |
C.空气中含量较多且化学性质不活泼的气体是二氧化碳 |
D.根据沸点不同,工业上常用分离液态空气的方法制备氧气 |
A.氧气可作燃料 |
B.干冰可用于人工降雨 |
C.熟石灰可用来处理硫酸厂的污水中含有硫酸等物质 |
D.钛和钛合金被广泛用于火箭、导弹、航天飞机和通信设备等 |
A.硫在空气中燃烧后生成无色无味的气体 |
B.实验室通常用澄清石灰水溶液来检验二氧化碳的气体 |
C.现有氮肥:尿素、硫酸铵、氧化铵、硝酸铵,区别尿素与铵盐的方法是加碱 |
D.金刚石、石墨和C60的化学性质相似,物理性质差异较大,是它们碳原子的排列方式不同 |
选项 | 实验目的 | 实验设计 |
A | 鉴别硬水与软水 | 加入肥皂水,振荡,观察水的变化 |
B | 鉴别涤纶面料与羊毛面料 | 分别灼烧,闻气味 |
C | 除去二氧化碳气体中含少量的氯化氢气体 | 把混合气体通入足量氢氧化钠溶液 |
D | 鉴别硝酸铵和氯化钠白色固体 | 分别加适量的碱,闻气味 |
A.A | B.B | C.C | D.D |
4.选择题- (共1题)
阅读理解
Green is an important color in nature. It is the color of grass and the leaves on trees. It is also the color of most growing plants.
Sometimes, the word green means young, fresh and growing. Sometimes, it describes something that is not yet ripe or finished. For example, a greenhorn is someone who has no experience, who is new to a situation. In the fifteenth century, a greenhorn was a young cow or ox whose horns(角) had not yet developed. A century later, a greenhorn was a soldier who had not yet had any experience in battle. By the eighteenth century, a greenhorn had the meaning it has today—a person who is new in a job.
Someone who has the ability to grow plants well is said to have a green thumb. The expression comes from early nineteen hundreds. A person with a green thumb seems to have a magic touch that makes plants grow quickly and well. You might say that the woman next door has a green thumb if her garden continues to grow long after your plants have died.
The Green Revolution is the name given some years ago to the development of new kinds of rice and other grains. The new plants produced much larger crops. The Green Revolution was the result of hard work by agricultural scientists who had green thumbs.
Green is also the color used to describe the powerful feeling, jealousy(嫉妒). The green-eyed monster is not a frightening creature from outer space. It is an expression used about four hundred years ago by British writer William Shakespeare in his play “Othello”. It describes the unpleasant feeling a person has when someone has something he wants. A young man may suffer from the green-eyed monster if his girlfriend begins going out with someone else. Or, that green-eyed monster may affect your friend if you get a pay rise and he does not.
5.填空题- (共1题)
温度(℃) | 20 | 40 | 60 |
溶解度(g/100g水) | 36.0 | 36.6 | 37.3 |

(1)20℃时氯化钠的溶解度是______g/100g 水。
(2)该实验是利用泥沙难溶于水而氯化钠______的性质进行提纯,操作Ⅲ的名称是______。
6.实验题- (共1题)
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【1】题量占比
计算题:(1道)
简答题:(6道)
单选题:(9道)
选择题:(1道)
填空题:(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:3
5星难题:0
6星难题:5
7星难题:0
8星难题:9
9星难题:1