2011-2012学年黑龙江省哈三中高一上学期期中考试化学试卷

1.

完形填空。
Dear friend,
I am 1 American school girl. My name is Alice Green. I am twelve. I 2 two brothers. My brothers and I 3 all at school. We go to school 4 Monday 5 Friday. We 6 have classes on 7and Sunday. We don't go to school on weekends. My father and my mother are teachers. They say China is great. I like 8, and I can sing a lot of songs. My brother and I like baseball and basketball. 9do you like? Let's10friends. Please write soon.
Yours,
Alice Green

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2.

完形填空。
Dear friend,
I am 1 American school girl. My name is Alice Green. I am twelve. I 2 two brothers. My brothers and I 3 all at school. We go to school 4 Monday 5 Friday. We 6 have classes on 7and Sunday. We don't go to school on weekends. My father and my mother are teachers. They say China is great. I like 8, and I can sing a lot of songs. My brother and I like baseball and basketball. 9do you like? Let's10friends. Please write soon.
Yours,
Alice Green

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3.

为除去粗盐中的Ca²⁺、Mg²⁺、SO₄^2—以及泥沙等杂质，某同学设计了一种制备精盐的实验方案，步骤如下（用于沉淀的试剂稍过量）：

（1）第①步中，操作A是_________，第⑤步中，操作B_________；
（2）第④步中，写出相应的化学方程式（设粗盐溶液中Ca²⁺的主要存在形式为CaCl₂）
_______________________，___________________________；
（3）若先用盐酸调pH再过滤，将对实验结果产生影响，其原因是_____________________________________________________________________________________。

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2011-2012学年黑龙江省哈三中高一上学期期中考试化学试卷

1.选择题(共2题)

2.实验题(共1题)

【1】题量占比

【2】：难度分析