2012年苏教版高中化学选修2 1.2硬水软化练习卷

适用年级:高二
试卷号:675844

试卷类型:课时练习
试卷考试时间:2017/7/20

1.选择题(共2题)

1.

根据短文内容及首字母提示,填写所缺单词。

    Hip-hop dancing(街舞) is popular with many young people today. They like it b{#blank#}1{#/blank#} they can invent their own moves. They use this dance to s{#blank#}2{#/blank#} their love for life. It a{#blank#}3{#/blank#} shows that they feel good about life, that they just want to be themselves and enjoy life, and that they are not afraid of problems.

    Hip-hop dancing has a h{#blank#}4{#/blank#} of more than 20 years. It f{#blank#}5{#/blank#} began in the 1980s in the US. In early times, it was seen in New York and Los Angles. At that time, many young black people often danced to the m{#blank#}6{#/blank#} in the streets. They used their l{#blank#}7{#/blank#}, arms, heads and even shoulders to dance. Many young people still use most of these moves today.

    Hip-hop dancing became popular all over the world because of the 1983 movie Flashdance. Some people performed Hip-hop dancing in the movie People enjoyed their performance. They began to dance l{#blank#}8{#/blank#} them. Then it became popular There are t{#blank#}9{#/blank#} kinds of Hip-hop dancing: new school and old school. More and more young people are l{#blank#}10{#/blank#} Hip-hop dancing. People believe that it is a good way to exercise their bodies, and that it is good for their health.


2.

阅读下面短文,从短文后所给各题的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

    Three men were caught in North China recently for killing four people in a HK $ 190 000 robbery in Shenzhen 10 years ago. The 1, Liu, Tian and Cao, were brought back to Shenzhen at the end of last month. They came to Shenzhen from their hometown of Changchun in Jilin in 2002, when they were 2 their twenties. Liu ran a beauty salon in Gangxia Village in Futian District,3 was losing money. Short of money, the three decided to 4 a neighboring store which dealt in currency exchange (货币兑换). On Sept. 25, 2004, the three, along with 5person, Gong, from Sichuan Province, went to the store 6 they wanted to exchange RMB into HK currency. They killed a woman and three men in the store, escaping to Shenzhen 7 HK $ 190 000. Shenzhen police began 8 them which remained fruitless for the following 10 years. But they were told last month that the suspects were probably 9 in Changchun. Changchun police caught Cao in a small village near his home. With 10 from Cao, police arrested Tian at a hospital where he was working as a doctor. Liu was arrested soon after.


2.单选题(共1题)

3.
离子交换树脂可能是一种( )
A.非电解质
B.有机高分子电解质
C.易溶于水的物质
D.在溶液中能与异性离子交换的电解质

3.填空题(共1题)

4.
天然水里一般含有Ca2、Mg2等多种离子。人们把含有较多量Ca2、Mg2的水叫做硬水,含有较少量或不含Ca2、Mg2的水叫做软水;降低水中Ca2、Mg2含量的过程叫做硬水软化。如果硬度太高(含Ca2、Mg2的浓度太大)会给生产、生活带来很多不利,因此硬水的软化是水处理的重要方面之一。
离子交换法常用于工业锅炉用水的软化。离子交换剂多种多样,磺化煤(NaR)就是一种阳离子交换剂。
(1)写出用磺化煤软化含Ca2、Mg2浓度较高的硬水的化学方程式____________________
(2)用药剂软化法软化过的水总是含有一定浓度的Ca2、Mg2,其原因是_______________
(3)参考烧水后的锅或壶中结有水垢的现象分析说明,如果用硬度太高的水作锅炉用水,主要的不利因素是________________________________________________________________
试卷分析
  • 【1】题量占比

    选择题:(2道)

    单选题:(1道)

    填空题:(1道)

  • 【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:0

    7星难题:0

    8星难题:0

    9星难题:2