1.简答题- (共1题)
(1)小明瓶中的空气主要是(填“实验室”或“教室”)_____的。
(2)请你叙述正确的收集方法_____。
(3)用生活中的日用品代替集气瓶来收集教室内的空气,你的方法是_____。
2.单选题- (共19题)

①发出黄光并放热; ②干冷的烧杯罩在蜡烛火焰上方,烧杯内壁有水雾出现; ③熄灭蜡烛后产生白烟; ④用磁盘坐在燃烧的火焰上方,磁盘底部黑;⑤用内壁附有石灰水的烧杯罩在火焰上方,石灰水变浑浊
A.②⑤ | B.②④⑤ | C.①②③④⑤ | D.①②③⑤ |
①将饮水管插入集气瓶内,吹气至气体充满集气瓶;
②把盛满水的集气瓶连同玻璃片一起倒立在水槽内:
③将集气瓶盛满水,用玻璃片先盖住瓶口的一部分,然后推动玻璃片将瓶口全部盖住:
④在水下用玻璃片盖好集气瓶,然后取出集气瓶放在桌上。
A.①②③④ | B.②③①④ | C.③②①④ | D.③④②① |

A.两只蜡烛应该大小相同 |
B.两支蜡烛燃烧的强弱应该相同 |
C.罩上集气瓶后甲无明显变化,乙中蜡烛燃烧减弱 |
D.罩上集气瓶一段时间后甲中蜡烛仍无明显变化,乙中蜡烛熄灭 |
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.
4.多选题- (共1题)
5.填空题- (共2题)
根据上述信息,请你回答下列问题。
(1)铝的物理性质有:_____、_____、_____、_____、_____、_____。
(2)铝的化学性质有:_____、_____。
(1)写出下列元素的元素符号
铜_____;汞_____;银_____;铂_____;金_____。
(2)写出下列元素符号对应的元素的名称
K_____;Ca_____;Na_____;Mg_____;Al_____;Zn_____;Fe_____;Sn_____;Pb_____。
(3)写出下列化学式对应的物质名称:CO2_____;N2_____; P2O5_____。
(4)写出下列物质的化学式: 水_____;氧气_____;二氧化硫_____。
6.实验题- (共1题)
(1)取一支蜡烛,用小刀切下一小块,把它放入水中,蜡烛浮在水面上。结论:石蜡的密度比水_____。
(2)点燃蜡烛,观察到蜡烛火焰分为外焰、内焰和焰心三层。把一根火柴梗放在蜡烛的火焰中(如图)约1秒后取出,可以看到火柴梗的_____(选填“a”或“b”或“c”)处最先碳化变黑。结论:蜡烛火焰的_____层温度最高。

(3)再将一只干燥的烧杯罩在蜡烛火焰上方,烧怀内壁出现_____。取下烧杯,迅速向烧杯内倒入少量澄清的石灰水,振荡,澄清石灰水变_____。结论:蜡烛燃烧时生成了_____。蜡烛燃烧的化学表达式是_____。
(4)蜡烛刚熄灭时,烛心会冒出白烟,该白烟是_____,欲证明它是这种物质可以_____。
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【1】题量占比
简答题:(1道)
单选题:(19道)
选择题:(2道)
多选题:(1道)
填空题:(2道)
实验题:(1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:1
7星难题:0
8星难题:9
9星难题:14