1.推断题- (共1题)

(1)在反应①中,反应前后B都存在的原因是:_____;B的化学式为_____;反应①的反应基本类型为_____反应。
(2)请写出反应②的化学方程式_____。
(3)请描述反应③的实验现象_____。
(4)指出物质D在日常生产生活中的一种用途_____。
2.计算题- (共2题)
(1)维生素D2由_____种素组成;
(2)试计算维生素D2的相对分子质量为_____。
(3)维生素D2中碳、氢、氧三种元素的质量比是_____。
3.科学探究题- (共1题)

(猜想与假设)
小明同学的猜想是:水;小红同学的猜想是:稀硫酸;小玲同学的猜想是:过氧化氢溶液。学习小组同学对标签进行了仔细观察、分析,他们一致认为小明的猜想不合理,其理由是_____。
(活动与探究)
根据以上讨论,小组同学对合理的猜想进行如下实验探究。请你帮助完成下列实验报告:
猜想 | 操作步骤 | 实验现象 | 结论和化学方程式 |
过氧化氢溶液 | a._____。 | b._____。 | 小玲的猜想不成立。 |
稀硫酸 | 取少量该溶液加入盛有 锌粒的试管中,并将一根 燃着的木条置于试管口。 | c._____。 | 小红的猜想成立,反应 的化学方程式为:d._____。 |
(探究质疑)
有同学认为小红同学的猜想除了是硫酸外还有可能是碳酸。碳酸可以通过加热分解的方式进行验证,碳酸分解的方程式为:_____。
(交流反思)
该实验告诉我们,进行化学实验必须掌握好化学反应的原理,仪器的选择,以及药品的_____方法,避免标签损伤。
4.简答题- (共1题)
(1)大雾天气导致呼吸病人增多,因为雾霾可使空气中增加大量的_____(填字母序号);
A 二氧化碳 B 一氧化碳 C 二氧化硫 D 可吸入颗粒物
(2)常见的化石燃料有_____、石油和天然气。乙醇属于可再生能源,乙醇在氧气中燃烧的化学方程式为:_____。
(3)下列关于“节约能源、保护环境”的做法正确的是_____。
A 直接排放工业废水 B 使用塑料袋
C 发展太阳能、风能等新能源 D 大力发展火力发电
5.单选题- (共16题)
A.野火烧不尽,春风吹又生 |
B.春蚕到死丝方尽,蜡炬成灰泪始干 |
C.只要功夫深,铁杵磨成针 |
D.爆竹一声除旧岁,春风送暖入屠苏 |
A.进入古井前,应先做灯火试验 |
B.冬天用煤炉取暖,为防止热量散失,应关紧门窗 |
C.用霉变花生压榨花生油 |
D.油锅不慎着火,应立即用大量的水冲灭 |
A.甲是一种化合物 | B.乙是一氧化碳 |
C.丙是一氧化碳 | D.丙是二氧化碳 |
A.增大可燃物的热值 | B.提高空气中氧气的含量 |
C.提高可燃物的着火点 | D.增大可燃物与空气的接触面积 |
6.选择题- (共4题)
On Thursday evening, Jack goes to bed early. Then he sees a rabbit. Jack doesn't know1it is from. He doesn't have a pet rabbit at home. “Come on,” says the rabbit. “Let's go to town!” “You can2?” Jack asks. “Yes,” the rabbit answers. “Come 3me.” Then the rabbit goes out of the4Jack goes with it.
They get to a zoo. In the zoo, a(n)5 is playing the guitar under a tree. “Let's dance!” says the rabbit. Jack 6with the rabbit. And he sees the moon is dancing, too. Jack wants to tell the rabbit about this,7he can't find it. And he doesn't see the zoo or the lion. He sees his8! “Jack, get up! You have to go to school!” says his mom. Jack smiles and he can't wait to9his mom about the dream. It's so10.
On Thursday evening, Jack goes to bed early. Then he sees a rabbit. Jack doesn't know1it is from. He doesn't have a pet rabbit at home. “Come on,” says the rabbit. “Let's go to town!” “You can2?” Jack asks. “Yes,” the rabbit answers. “Come 3me.” Then the rabbit goes out of the4Jack goes with it.
They get to a zoo. In the zoo, a(n)5 is playing the guitar under a tree. “Let's dance!” says the rabbit. Jack 6with the rabbit. And he sees the moon is dancing, too. Jack wants to tell the rabbit about this,7he can't find it. And he doesn't see the zoo or the lion. He sees his8! “Jack, get up! You have to go to school!” says his mom. Jack smiles and he can't wait to9his mom about the dream. It's so10.
On Thursday evening, Jack goes to bed early. Then he sees a rabbit. Jack doesn't know1it is from. He doesn't have a pet rabbit at home. “Come on,” says the rabbit. “Let's go to town!” “You can2?” Jack asks. “Yes,” the rabbit answers. “Come 3me.” Then the rabbit goes out of the4Jack goes with it.
They get to a zoo. In the zoo, a(n)5 is playing the guitar under a tree. “Let's dance!” says the rabbit. Jack 6with the rabbit. And he sees the moon is dancing, too. Jack wants to tell the rabbit about this,7he can't find it. And he doesn't see the zoo or the lion. He sees his8! “Jack, get up! You have to go to school!” says his mom. Jack smiles and he can't wait to9his mom about the dream. It's so10.
7.填空题- (共4题)

(1)第12号元素它属于_____元素(填“金属”或“非金属”),它在化学反应中容易_____电子,它的氯化物的化学式为_____。
(2)从表中可以探究出以下规律:在原子里,核电荷数=原子序数=_____。
(3)通过细致分析,还可以总结出一些规律:同一列的规律_____相同;同一行的规律是_____相同。
A 生石灰 B 活性炭 C 氧气 D 石墨 E 稀有气体 F 石灰石;请按要求填空(填字母编号)。
(1)使带火星的木条复燃的是_____。
(2)常用于冰箱除臭的_____。
(3)可作灯管填充气的是_____。
(4)用作电池电极的是_____。
(5)用作某些食品防止受潮的干燥剂的是_____。
①天然气的主要成分_____。
②最理想的可作高能燃料的单质_____。
③易与血红蛋白结合使人中毒的氧化物_____。
④污染空气,形成酸雨的气体_____。
⑤黑色金属氧化物_____。
⑥一种具有臭鸡蛋气味的有毒硫化氢气体_____。
8.实验题- (共2题)

(1)写出标号①仪器的名称:_____。
(2)实验室制取二氧化碳的反应原理是(写化学方程式)_____。
(3)实验室制取二氧化碳时,可选用的发生装置是_____(填字母代号)。收集二氧化碳通常用C装置,而不选用D或E装置,请从二氧化碳性质的角度来分析其原因_____。
(4)若实验时CO2始终收集不满,可能的原因是_____或_____。
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【1】题量占比
推断题:(1道)
计算题:(2道)
科学探究题:(1道)
简答题:(1道)
单选题:(16道)
选择题:(4道)
填空题:(4道)
实验题:(2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:1
5星难题:0
6星难题:1
7星难题:0
8星难题:9
9星难题:16