1.单选题- (共6题)
A.酚酞——石灰水溶液 |
B.酚酞——盐酸溶液 |
C.石蕊——石灰水溶液 |
D.石蕊——盐酸溶液 |
A.能与二氧化碳反应 |
B.能使无色酚酞试液变红 |
C.能与稀硫酸反应 |
D.能使紫色石蕊试液变红 |

A.该实验是将盐酸滴入氢氧化钠溶液中 |
B.该实验说明在蒸馏水中加入微量的酸或碱,溶液的pH会发生较大的变化 |
C.C点时的溶液能使酚酞试液变红 |
D.A点时的溶液中的溶质有氯化钠和氢氧化钠两种物质 |
A.向氢氧化钠溶液中加入盐酸后,混合溶液的温度升高 |
B.向氢氧化钠溶液中加入盐酸后,混合溶液的质量增大 |
C.向滴有酚酞的氢氧化钠溶液中加入盐酸后,红色褪去 |
D.向氢氧化钠溶液中加入盐酸后,混合溶液的pH<7 |
2.选择题- (共2题)
My mother is a teacher. On weekdays, she gives lessons at school and on Saturdays she works in clubs. On Sundays, she is still busy.
On Sunday morning, mum gets up at six. She cooks breakfast for us first. And then it's time for cleaning. After that, she has breakfast with father and me. At 9, she goes to buy food for lunch in the supermarket. She can have a short rest after lunch. In the afternoon, mum doesn't go out. She helps me with my lessons. She does some reading, too.
Mother watches TV at about 7 when she finishes (完成) the housework. But at that time she is always tired and falls asleep (睡着) in the sofa sometimes.
My mother is a teacher. On weekdays, she gives lessons at school and on Saturdays she works in clubs. On Sundays, she is still busy.
On Sunday morning, mum gets up at six. She cooks breakfast for us first. And then it's time for cleaning. After that, she has breakfast with father and me. At 9, she goes to buy food for lunch in the supermarket. She can have a short rest after lunch. In the afternoon, mum doesn't go out. She helps me with my lessons. She does some reading, too.
Mother watches TV at about 7 when she finishes (完成) the housework. But at that time she is always tired and falls asleep (睡着) in the sofa sometimes.
3.填空题- (共1题)
(1)将带锈铁钉放入试管后加入稀盐酸,看到铁锈消失,溶液呈黄色,反应的化学方程式为 。
(2)课后清洗仪器时,一同学发现试管中的黄色溶液变成浅绿色,表明此时的溶液已变为 溶液。这是由于过量的铁继续与黄色溶液的主要成分反应造成的,该反应的化学方程式为 。
4.实验题- (共1题)

(1)实验1的目的是________________________________________________________________________;
(2)实验2中发生反应的化学方程式是________________________;
(3)实验3中观察到溶液由红色变为无色后,小萍想知道反应后溶液中除NaCl以外,是否还含有其他溶质(不考虑酚酞),于是她向反应后的溶液中加入一种试剂,从而得出了结论。小萍加入的试剂可能是________________________;
(4)通过上述实验探究活动,可以总结出碱的化学性质是
①碱能与酸发生中和反应;
②________________;
……
(5)准备实验时,小英发现药品室有两瓶未标注浓度的氢氧化钠溶液,经询问老师得知,该两瓶溶液的溶质质量分数分别为5%和10%。请设计实验方案完成对这两瓶溶液的鉴别(仅限以下实验用品:试管、量筒、滴管、酚酞溶液、10%盐酸)。
实验步骤 | 预计现象及 相应结论 |
__________________________ | ________________________________为5%的氢氧化钠溶液,另一种为10%的氢氧化钠溶液 |
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【1】题量占比
单选题:(6道)
选择题:(2道)
填空题:(1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:2
5星难题:0
6星难题:4
7星难题:0
8星难题:2
9星难题:0