1.科学探究题- (共1题)
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________。 |
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)
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 |
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 |
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.①②③ | B.①②③⑦ | C.①②⑦⑧ | D.②③⑦⑧ |
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 |
A.8毫升 | B.大于8毫升 | C.小于8毫升 | D.无法判断 |

A.氧气 |
B.二氧化碳 |
C.棉线 |
D.石蜡的固体小颗粒 |
A.提出假设 | B.交流评价 | C.设计实验 | D.作出结论 |
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 |
3.选择题- (共2题)
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.
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)
(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___________________________________。
(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______.
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______
(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)
(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
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_____;
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【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)
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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: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