1.简答题- (共2题)
(1)生成的单质与化合物分子的个数比为 ;
(2)根据上述示意图,请从微观角度描述化学变化的实质是 .

2.推断题- (共1题)

(1)操作I的名称是__;
(2)写出下列物质的化学式:B___,D___;
(3)固体A可能是_______________(填化学式,写出一种情况即可);
(4)C溶液与硝酸银溶液生成白色沉淀D的化学方程式是______________________;
(5)E溶液与F溶液生成白色沉淀的化学方程式是___________________________,该反应属于__________反应(填基本反应类型)
3.单选题- (共8题)
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A.在密闭容器中,点燃一氧化碳和氧气的混合气体 | B.向pH=12的氢氧化钠溶液中不断加水稀释 | C.向部分变质的氢氧化钠溶液中不断加稀盐酸 | D.用等质量和等质量分数的双氧水分别制取氧气 |
A. A B. B C. C D. D
物质 | W | O2 | CO2 | H2O |
反应前质量/g | 16 | 72 | 2 | 0 |
反应后质量/g | 0 | 待测 | 46 | 36 |
A.待测数值为6g |
B.W一定不是氧化物 |
C.CO2是反应物,H2O是生成物 |
D.反应中CO2和H2O质量变化之比为23:18 |
A.黄曲霉素属于有机物 |
B.黄曲霉素由C、H、O三种元素组成 |
C.1个黄曲霉素分子中含有35个原子 |
D.含黄曲霉素的食物经高温蒸煮后可以使用 |
A.水结成冰后,水分子有运动变为静止 |
B.水变成水蒸气,水分子的化学性质发生了改变 |
C.保持水化学性质的微粒是水分子 |
D.水沸腾时能掀起壶盖,是因为温度升高分子体积变大 |
选项 | 物质 | 除去杂质的方法 |
A | Cu粉(Zn粉) | 加入过量稀盐酸,搅拌、过滤、洗涤、干燥 |
B | CaO粉末(CaCO3粉末) | 加入过量水、搅拌、过滤、洗涤、干燥 |
C | FeCl3溶液(CuCl2溶液) | 加入过量的锌粉,过滤 |
D | NaCl溶液(Na2SO4溶液) | 加入过量BaCL2溶液,充分反应后过滤 |
A.A | B.B | C.C | D.D |
4.选择题- (共20题)
阅读下面短文,在空白处填入一个适当的词,或填入括号中所给单词的正确形式。
Every country shares things {#blank#}1{#/blank#} common: we value family and laughter, cherish food and health, and celebrate large {#blank#}2{#/blank#}(festival) and traditions. Yet within the similar things we share, there are unique parts of each country. One of characteristics that are famous of British people {#blank#}3{#/blank#}(be) their sense of humor, particularly self-mockery (自嘲). This is a type of humor that criticizes and undervalues oneself. For example, a fat person may joke: “I am on a new sea food diet. If I see food, I eat it.” This is {#blank#}4{#/blank#} well-known self-mockery joke. It's difficult why self-mockery {#blank#}5{#/blank#}(tie) to the British people. But every nation's sense of humor comes from its culture and history. It could come from another British characteristic, modesty, {#blank#}6{#/blank#}(mean) not talking openly about your skills. This seems to be something that is similar to people in China, {#blank#}7{#/blank#} modesty plays a big part in daily life. It also acts as a defense of our self-respect by playing down our skills, this can {#blank#}8{#/blank#}(less) the chance of people criticizing us. Another possible reason is {#blank#}9{#/blank#} the British people do not take themselves too {#blank#}10{#/blank#}(serious).
Word came ________ our country has sent up another man-made satellite. I was always wondering ________ the scientist managed to make such a great achievement.
Word came ________ our country has sent up another man-made satellite. I was always wondering ________ the scientist managed to make such a great achievement.
This modern hotel, ______ the visitors can enjoy the best service in the city, is ________Mary stayed last time.
In the past decade, our education system too much on grades. However, grades have a direct connection with future success is still a question.
The fact that so many people still smoke that we need a nationwide campaign _________ the awareness of the dangers of smoking.
What great means! How did you manage to find ? It is the first time I such wonderful means.
根据短文理解,选择正确答案。
Welcome to our third newsletter of the year!
Our major activity for March is our Walk for the Woods fundraising event on Saturday, 17th March, starting any time between 10 a.m. and 2 p.m. We will be walking the distance between Warley Woods and Tipperary. It is indeed a long way—80 miles. The more people that you can get to sponsor you, the more money we can raise to help look after our beautiful woodland. More information is available on our website.
The Sunday volunteers planted two beeches and an oak last week. This was thanks to the money from the Big Tree Plant and to Lisa and Gordon Whitaker, whose friends gave money for the big trees instead of for their wedding presents. Thanks to everyone who took part.
There were 15 volunteers at the Oral History Training Day which was led very ably by Julia Letts. The group will be meeting again and will start to interview the local people who have offered to tell their stories. We are happy to hear from others who would like to be interviewed about their memories of the Woods for the project. If you or anyone you know is interested, please call Viv Cole at the office. This project is financed by Heritage Lottery Fund.
There was a huge response to the Forest Schools activities held at half term. These will be held again during the Easter holidays on the following dates: 4th April from 10 a.m. to 3 p.m. for over 8s. On 12th April from 10 a. m. to 12 noon, there will be a Teddy Bears' Picnic for the under 8s. All these must be booked in advance.
Finally, don't forget the Easter Egg Roll on Bank Holiday, 9th April, starting at 11 a.m. Bring your own hard-boiled and decorated egg to roll down the hill in the woods. The first past the finishing line will win a large chocolate egg! This year, due to popular demand, there will also be an Adults' Easter Egg Roll following the children's competition.
We look forward to seeing you all soon, at one of our many events!
根据短文理解,选择正确答案。
Welcome to our third newsletter of the year!
Our major activity for March is our Walk for the Woods fundraising event on Saturday, 17th March, starting any time between 10 a.m. and 2 p.m. We will be walking the distance between Warley Woods and Tipperary. It is indeed a long way—80 miles. The more people that you can get to sponsor you, the more money we can raise to help look after our beautiful woodland. More information is available on our website.
The Sunday volunteers planted two beeches and an oak last week. This was thanks to the money from the Big Tree Plant and to Lisa and Gordon Whitaker, whose friends gave money for the big trees instead of for their wedding presents. Thanks to everyone who took part.
There were 15 volunteers at the Oral History Training Day which was led very ably by Julia Letts. The group will be meeting again and will start to interview the local people who have offered to tell their stories. We are happy to hear from others who would like to be interviewed about their memories of the Woods for the project. If you or anyone you know is interested, please call Viv Cole at the office. This project is financed by Heritage Lottery Fund.
There was a huge response to the Forest Schools activities held at half term. These will be held again during the Easter holidays on the following dates: 4th April from 10 a.m. to 3 p.m. for over 8s. On 12th April from 10 a. m. to 12 noon, there will be a Teddy Bears' Picnic for the under 8s. All these must be booked in advance.
Finally, don't forget the Easter Egg Roll on Bank Holiday, 9th April, starting at 11 a.m. Bring your own hard-boiled and decorated egg to roll down the hill in the woods. The first past the finishing line will win a large chocolate egg! This year, due to popular demand, there will also be an Adults' Easter Egg Roll following the children's competition.
We look forward to seeing you all soon, at one of our many events!
with many other children, he found himself with love and care all the way . It is therefore no wonder that he grew to be a loving kid.
with many other children, he found himself with love and care all the way . It is therefore no wonder that he grew to be a loving kid.
5.填空题- (共7题)

(1)A、B、C、D四种微粒共表示___种元素;
(2)在A、C、D三种微粒中与B微粒的化学性质相似的是__;
(3)C中X=___,从E图中你获得的信息是__________________(答出一条即可);
(4)碘盐中含有碘酸钾(KIO3),碘酸钾中碘元素的化合价为___价.
(1)t2℃时,将A、B、C各25g分别放入100g水中,充分搅拌后,能形成饱和溶液的物质是 ,将其转化为不饱和溶液,可采用的一种方法是 ) .
(2)t2℃时,将A、C两种物质的饱和溶液各100g,分别降温到t1℃时,所得A物质溶液的质量 C物质溶液的质量(填“>”“=”或“<”).
(3)t1℃时,将A、B、C三种物质的饱和溶液升温到t2℃(其它条件不变),所得溶液溶质质量分数由大到小的顺序为 .

(1)我们每天要摄入大量的食物,其中肉、蛋、奶中含有的主要营养素是 ;
(2)常用的洗洁精清洗餐具上的油污,这是因为洗洁精具有 作用,长期使用的暖水瓶内胆常有一层水垢,可以用厨房中的 除去;
(3)近年来,某些自来水厂在用液氯进行消毒处理时还要加入一种物质X,X能延长液氯杀菌时间,其反应化学方程式为X+HClO=NH2Cl+H2O,则X的化学式是 .
(1)以下不属于化石燃料的是 (填字母,下同);
A、天然气 B、石油 C、氢气 D、煤
(2)下列措施中能降低空气中PM的是 ;
A、植树造林 B、露天焚烧秸秆
C、雾霾天气出行戴口罩 D、尽量乘公交车或骑自行车出行,少开私家车
(3)大量使用化石燃料除了会导致PM2.5超标以外,还会引起其它环境问题,如: 、
等,因此人们要注重开发和使用新能源;
(4)汽车尾气中含有多种大气污染物,在催化剂的作用下可以使其中的CO和NO迅速反应转化为两种无毒的气体,其中一种是空气中含量最多的气体,这样能减少空气的污染,请你写出该反应的化学方程式

(1)图A所示实验的错误是 ;
(2)图B所示实验中导致实验结果偏大的原因是 (答出一点即可);
(3)图C所示实验中的错误操作,可能导致所配制溶液溶质质量分数 (填“偏大”、“偏小”或“不变”);
(4)图D所示实验的错误操作,可能导致的后果是
6.实验题- (共1题)

(1)试管A中的化学方程式是 ,在实验过程中并没有观察到该反应的明显现象,请你写出一种能观察到变化发生的方法
;
(2)通过分析废液缸中的现象,你认为B试管的废液中溶质成分是 (填化学式,下同);
(3)小组同学对废液缸中最终废液的成分进行探究,请你一起参与探究
(提出问题)最终废液中溶质是什么?
(查阅资料)硫酸钠溶液显中性
(假设猜想)猜想①:Na2SO4
猜想②:Na2SO4、Na2CO3
猜想③:
(实验探究)请你设计实验,确定哪个猜想是正确的.
实验步骤 | | 实验结论 |
取少量废液于试管中 滴加紫色石蕊试液 | | 猜想1正确 |
| 猜想2正确 | |
| 猜想3正确 |
-
【1】题量占比
简答题:(2道)
推断题:(1道)
单选题:(8道)
选择题:(20道)
填空题:(7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:11
7星难题:0
8星难题:4
9星难题:1