2013届广西贵港市覃塘区初中毕业班第四次教学质量监测试题化学试卷

1.

在通入空气并加热的条件下，铜与稀硫酸反应转化为硫酸铜。
（1）请完成该反应的化学方程式：
2Cu＋2H₂SO₄＋O₂

2CuSO₄＋
（2）利用此反应，将含铜80%的废料与10%的稀硫酸反应转化为10%的硫酸铜溶液，计算要得到1600g10%的硫酸铜溶液，需要加入稀硫酸的质量和水的质量（假设杂质不参加反应，也不溶于水）。

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2.

下列用途中，利用了物质的物理性质的是

A．乙醇用作酒精灯的燃料	B．碳用于冶金工业
C．硫酸用于处理碱性废水	D．铜丝用于制作导线

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3.

下列物质中，属于纯净物的是（）

A．食盐水

B．蒸馏水

C．矿泉水

D．石油

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4.

铁是人体必需的元素之一．铁原子的质子数为26，相对原子质量为56，则铁原子的核外电子数为（）

A．56

B．26

C．30

D．28

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5.

＋6价硫元素的氧化物的化学式为
A. SO₂ B. SO₃ C. Na₂SO₄ D. H₂SO₄

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6.

下列分离或除杂的实验操作中，正确的是

A．分离铜粉和碳粉：滴加稀硫酸

B．除去氯化钠中的氢氧化钠：滴加适量盐酸

C．除去氧气中的一氧化碳：通过灼热的氧化铜粉末

D．除去二氧化碳中的水蒸气：通过碱石灰（主要成分为NaOH和CaO）

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7.

下列物质露置在空气中一段时间后，质量会减少的是( )

A．浓盐酸

B．烧碱

C．浓硫酸

D．生石灰

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8.

下列突发事件处理方法正确的是

A．电器着火，立即用水浇灭	B．煤气泄漏，立即开灯查看
C．油锅着火，立即盖上锅盖	D．房间着火，立即开窗通风

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9.

“中华人民共和国的一切权力属于人民。人民行使权力的机关是全国人民代表大会和地方各级人民代表大会。”材料出自（）

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10.阅读理解

C

Kevin and his family had a holiday to his hometown—a very beautiful island. It was a great trip.

They all wanted this trip. Kevin's parents wanted to go out into nature after a long time of work. Kevin needed to take a good rest before the exam. Kevin's brother Jim is in the first grade, so he doesn't have a voice in family things. He was just happy that they were going outside.

The sea was blue. They went boating in the sea. It was so cool. There was no Internet, so they spent the whole time together. They stayed in a small wooden house by the sea. Mom and Kevin cooked delicious sea food. Jim ran after chickens and ducks, and gave them food. When he became tired, he sat next to his dad and helped him fish. He even helped to hook two fish!

It is always good to spend time with families. They liked this trip!

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11.阅读理解

C

Kevin and his family had a holiday to his hometown—a very beautiful island. It was a great trip.

They all wanted this trip. Kevin's parents wanted to go out into nature after a long time of work. Kevin needed to take a good rest before the exam. Kevin's brother Jim is in the first grade, so he doesn't have a voice in family things. He was just happy that they were going outside.

The sea was blue. They went boating in the sea. It was so cool. There was no Internet, so they spent the whole time together. They stayed in a small wooden house by the sea. Mom and Kevin cooked delicious sea food. Jim ran after chickens and ducks, and gave them food. When he became tired, he sat next to his dad and helped him fish. He even helped to hook two fish!

It is always good to spend time with families. They liked this trip!

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12.某班50名同学的年龄统计如下：

年龄（岁）	12	13	14	15
学生数（人）	1	23	20	6

该班同学年龄的众数和中位数分别是（）

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13.已知关于x的不等式组 {#mathml#}

{\begin{cases} 2 a + 3 x > 0 \\ 3 a - 2 x \geq 0 \end{cases}

{#/mathml#} 恰有3个整数解，则a的取值范围是（）

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14.

用化学用语表示：
7个氯原子__ ___ 2个钠离子___ __ 纯碱___ __
人体胃液中含有的酸初中化学中最常用的溶剂__ ___

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15.

根据下图回答有关问题。

（1）实验室利用A装置制取氧气，当伸入集气瓶的导管口气泡放出时，才可以收集氧气。
（2）实验室利用B装置制取二氧化碳，该反应的化学方程式是。制得的二氧化碳中常含有杂质气体，可分别用C、D装置除去， D装置的除杂原理是（用化学方程式表示）。
（3）将纯净的二氧化碳气体通入盛有蒸馏水的洗气瓶，一段时间后，测得溶液的pH＜7，对该现象的合理解释是（用化学方程式表示）。

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2013届广西贵港市覃塘区初中毕业班第四次教学质量监测试题化学试卷

1.计算题(共1题)

2.单选题(共7题)

3.选择题(共5题)

4.填空题(共2题)

【1】题量占比

【2】：难度分析