山东省东营市河口区义和镇中心学校2018-2019学年八年级上学期第一次月考化学试题

适用年级:初二
试卷号:256671

试卷类型:月考
试卷考试时间:2019/6/23

1.科学探究题(共1题)

1.
某同学对蜡烛的燃烧进行探究:
点燃一支蜡烛,用一只烧杯倒扣在燃着的蜡烛上,蜡烛燃烧片刻后熄灭,如实验一。再点燃蜡烛,然后吹灭,看到烛芯产生一缕白烟,用火柴点燃白烟,蜡烛重新被引燃,如实验二。将粗细均匀的木条水平放在蜡烛的火焰上,稍加热后观察木条燃烧现象,如实验三。

(1)操作①中,蜡烛能燃烧片刻的原因是_________________。
(2)操作②中,关于白烟的成分,有同学做出了下列猜想:
A.白烟是水蒸气;B.白烟是石蜡固体小颗粒;C.白烟是二氧化碳。你认为上述猜想有道理的是________(填序号),理由是________。
(3)该同学在做实验一的过程中,发现罩在火焰上方的烧杯内壁被熏黑,你认为她的以下做法中不合适的是(______)
A 反复实验,并观察是否有相同现象
B 查找资料,了解石蜡的主要成分,探究生成的黑色固体是什么
C 认为与本次实验目的无关,不予理睬
D 询问老师或同学,讨论生成黑色物质的原因

2.单选题(共16题)

2.
判断下列描述是物理性质的是( )。
A.木材能燃烧B.水的沸点通常是100℃
C.矿石粉碎D.二氧化碳使澄清的石灰水变浑浊
3.
在下列变化中,与其它三种变化有本质区别的是(   )
A.铁生锈B.煤燃烧
C.衣服晾干了D.澄清的石灰水遇到二氧化碳变浑浊
4.
下列变化中前者是化学变化,后者是物理变化的是( )
A.食盐溶于水,火药爆炸B.镁带燃烧,铁生锈
C.食物腐败,电灯发光D.汽油挥发,酒精燃烧
5.
下列变化属于物理变化的是
A.光合作用B.钢铁生锈
C.酸雨侵蚀D.冰山融化
6.
下列叙述错误的是()
A.发光、发热不一定是化学变化
B.化学变化的特征是有其他物质生成
C.我国古代化学工艺在世界上享有盛名,如制火药、烧制瓷器
D.观察物质变化时伴随的现象,就一定能判断有无化学变化发生
7.
下列常见现象中,不发生化学变化的是()
A.天然气燃烧B.大米霉变C.灯泡发光D.铁钉生锈
8.
PM2.5是指空气中直径小于或等于2.5微米的颗粒物,它是造成雾霾天气的“元凶”之一.下列做法不会增加空气中PM2.5的是()
A.燃煤发电B.燃放烟花爆竹
C.焚烧垃圾D.使用太阳能热水器
9.
以下有关描述中属于CO2物理性质的是
①常温下是一种无色无味的气体  ②密度比空气大 ③可溶于水(体积比1:1)
④部分与水反应生成碳酸  ⑤可以使澄清的石灰水变浑浊 ⑥二氧化碳不支持燃烧,常用作灭火剂
⑦二氧化碳沸点-78.5℃    ⑧固态二氧化碳俗称干冰,常用作制冷剂
A.①②③B.①②③⑦C.①②⑦⑧D.②③⑦⑧
10.
“绿色化学”是21世纪化学发展的主导方向.“绿色化学”要求从根本上消灭污染,是一门能彻底阻止污染产生的科学.它包括“绿色生产”和“绿色销毁”等内容.2002年桂林市在整顿音像市场的活动中,查获了一批盗版光盘,并进行了“绿色销毁”,以下做法属于“绿色销毁”的是(  )
A.泼上汽油焚烧B.倾倒入漓江
C.深埋入土中D.碾压粉碎后回收再利用
11.
某同学用量筒量取一定体积的液体,先俯视读出液体体积为18毫升,该生倾倒出部分液体后,又仰视液面读其体积为10毫升.则倒出液体的体积为(  )
A.8毫升B.大于8毫升C.小于8毫升D.无法判断
12.
李明同学在做蜡烛燃烧的探究实验时,用火柴去点蜡烛刚熄灭时的白烟,他惊奇地发现蜡烛又能重新燃烧起来。由此,他大胆地做了一个推测,此白烟是(  )
A.氧气
B.二氧化碳
C.棉线
D.石蜡的固体小颗粒
13.
某些金属工艺品的外观有银白色的金属光泽,同学们认为它可能和铁一样,有磁性。在讨论时,有同学提出“我们可以拿磁铁来吸引一下”。“拿磁铁来吸引一下”属于科学探究中的(   )
A.提出假设B.交流评价C.设计实验D.作出结论
14.
化学仪器对应的名称书写正确的(    )
A.长劲漏斗B.量桶
C.坩埚钳D.椎形瓶
15.
在 2017年邵阳市初中化学实验操作技能考试中,某同学抽到“试题三:给液体加热”,考试结束时,老师发现他使用的试管破裂了,其原因可能是
A.试管口对着自己或他人
B.液体的量超过试管容积的1/3
C.没有擦干试管外壁的水便开始加热
D.先用外焰均匀加热,再固定位置加热
16.
在探究我们吸入的空气和呼出的气体有什么不同的活动中,其中有一操作如图,则该操作说明该气体是(  )
A.极易溶于水B.不易溶于水
C.易溶于水D.与气体是否溶于水无关
17.
下列操作正确的是
A.胶头滴管的使用B.试管夹套入试管C.熄灭酒精灯D.液体药品的取用

3.选择题(共2题)

18.

阅读理解

    This brief book is aimed at high school students, but speaks to anyone learning at any stage of life.

    Its formal, serious style closely matches its content, a school-masterly book on schooling. The author, W. H. Armstrong, starts with the basics: reading and writing. In his opinion, reading doesn't just mean recognizing each word on the page; it means taking in the information, digesting it and incorporating it into oneself just as one digests a sandwich and makes it a part of himself. The goal is to bring the information back to life, not just to treat it as dead facts on paper from dead trees. Reading and writing cannot be completely separated from each other; in fact, the aim of reading is to express the information you have got from the text. I've seen it again and again: some one who can't express an idea after reading a text is just as ineffective as someone who hasn't read it at all.

    Only a third of the book remains after that discussion, which Armstrong devotes to specific tips for studying languages, math, science and history. He generally handles these topics thoroughly and equally, except for some weakness in the science and math sections and a bit too much passion (激情) regarding history to his students, that was a hundred times more than my history teachers ever got across. To my disappointment, in this part of the book he ignores the arts. As a matter of fact, they demand all the concentration and study that math and science do, though the study differs slightly in kind. Although it's commonly believed that the arts can only be naturally acquired, actually, learning the arts is no more natural than learning French or mathematics.

    My other comment is that the text aged. The first edition apparently dates to the 1960s—none of the references(参考文献) seem newer than the late 1950s. As a result, the discussion misses the entire computer age.

    These are small points, though, and don't affect the main discussion. I recommend it to any student and any teacher, including the self-taught student.

19.

True or False (判断下列句子是否符合短文内容,符合的用"T"表示,不符合的用"F"表示)
Richard is an exchange student from the USA. He is teaching his friends at Rose Garden School how to play Softball. He is explaining the rules.
Richard:     First, we need a bat, a ball and some bases.
Ben:        What are bases?
Richard:     They are flat squares that show you where to run. After you hit the ball, you have to run around the bases.
If you stand on a base, you are safe. If you are running to a base, and the other team touches the base with the ball, then you are out.
Jennifer:     Oh, I see. How would I hit the ball?
Richard:     Have you seen baseball on television?
Jennifer:     I have.
Richard:     Well, Softball is like baseball, only the ball is bigger and softer too.
Jennifer:     Do you like volleyball? I love it.
Richard:     I like to play beach volleyball. It’s different from volleyball.
Ben:        How?
Richard:     In beach volleyball, you only have two people on each team and the court is smaller.                                                                         
Jennifer:     Do you play on the beach?
Richard:     Yes. It’s good because if you dive for the ball, you don’t hurt yourself.
Ben:        Do you play football at your school?
Richard:     Which kind of football?
Jennifer:     I don’t understand there more than one kind? I thought everyone play the same kind of football.
Richard:     No. In the USA, we have football and soccer. Soccer is a game that is played around the world.
In other countries, soccer is called football. In the USA, we also play a different game called football.
In this game, you throw the ball and you have to wear a helmet to play.
Jennifer:     Well, I want to play softball.

4.填空题(共9题)

20.
把某种金属用小刀轻轻切下一小块放入盛水的烧杯中.,观察到该金属能与水剧烈反应,并放出热,本身熔化成银白色的小圆球,浮在水面上,根据以上叙述推断:
(1)该金属的物理性质有:
①硬度____ ;②熔点____ ;③密度____  ;④颜色____  。
(2)该金属的化学性质有___________________________________。
21.
①铁熔化成铁水;②糯米酿成酒;③铁在潮湿的空气中容易生锈;④灯泡中的钨丝通电后发热发光;⑤食物腐烂;⑥木柴燃烧;⑦胆矾是蓝色固体.上述几种情况中(用序号填空):
(1)属于描述物理性质的是______,描述化学性质的是______;
(2)属于物理变化的是______,属于化学变化的是______.
22.
古典文学是国之瑰宝,下列古诗句中哪些涉及化学变化?哪些是物理变化?请填入横线上.
春蚕到死丝方尽,蜡炬成灰泪始干______  .
只要功夫深,铁杵磨成针______ .
千锤百炼出深山,烈火焚烧若等闲______
23.
下面是一学习小组针对科学探究提出的几个问题,请将下列所述基本环节补充完整。
(1)“呼出的气体是什么?”属于科学探究中的_____环节;
(2)“呼出的气体中一定有二氧化碳”属科学探究中的_____环节;
(3)“呼出的气体中可能有二氧化碳”属科学探究中的_____环节;
(4)将呼出的气体通过澄清石灰水中,发现石灰水变浑浊,这属于科学探究中的_____环节;
(5)“这个实验既简单,现象又明显”,某同学的这句话属于科学探究中的_____环节。
上述各环节的正确顺序是_____。(填上述数字序号)
24.
小刚同学称重20.3g固体药品,称量结束后才发现自己把称量物和砝码的位置颠倒了.请问:小刚称量药品的实际质量是___g.
25.
规范的实验操作是实验成功的前提,请回答:
(1)量取8mL稀硫酸,应选用______________mL的量筒。
(2)胶头滴管用过后应____________,再去吸取其他药品。
(3)实验室用酒精灯给盛水的烧杯加热时,烧杯的底部应垫放______________。
(4)玻璃管插入带孔橡皮塞,先把玻璃管口____,然后稍稍用力转动插入
26.
用下列序号填空:
①烧杯 ②试管 ③胶头滴管④药匙 能直接加热的玻璃仪器_________;吸取或滴加少量液体的仪器________;取用粉末状药品所用的仪器____;用作较大量试剂的反应容器_____;
27.
给150mL液体加热,需要使用的仪器是下列中的(填序号)_____
①试管 ②烧杯 ③试管夹 ④酒精灯 ⑤蒸发皿 ⑥石棉网 ⑦铁架台(带铁圈 )⑧坩埚钳
28.
量液时,量筒必须____ ,视线要与量筒内液体____保持水平。小明需要量取8mL稀盐酸,但在读数时他俯视了刻度线,则他实际取出的液体药品比需要的_________(填偏大、偏小、不变)
试卷分析
  • 【1】题量占比

    科学探究题:(1道)

    单选题:(16道)

    选择题:(2道)

    填空题:(9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:0

    5星难题:0

    6星难题:7

    7星难题:0

    8星难题:10

    9星难题:9