问题 填空题

(6分)眼镜是人们常用的护眼工具,如图是一款变色眼镜的示意图:

(1)所标物质中属于金属单质的是_______________,属于有机合成材料的是______________。

(2)夏天铜螺丝部位常出现一层绿色物质,这是由于铜生锈的原因,请完成该反应的化学方程式:___Cu+O2+_____+H2O=Cu2(OH)2CO3

(3)该款变色眼镜的玻璃里加入了溴化银(AgBr)和氧化铜。在强光照射下,溴化银分解成溴和银,玻璃颜色变深,此反应类型属于__________反应;当光线变暗时,溴和银在氧化铜作用下,重新生成溴化银,玻璃颜色变浅,氧化铜在反应中起______作用。

结合镜片材料从天然水晶、光学玻璃到光学树脂的变迁过程,请你谈一谈化学与生活的关系:____________________________________________________________。

答案

(1)铜 塑料   (2)2Cu+O2+CO2+H2O=Cu2(OH)2CO3

(3)分解   ;催化剂; 

化学在保障人类生存和提高人类生活质量方面有重要作用(或生活离不开化学) 

 

题目分析:(1)所标物质中属于金属单质的是铜,根据所学三大合成材料可知,属于有机合成材料的是塑料;(2)根据质量守恒定律反应前后原子的种类和数量不变,可知铜生锈的原因为2Cu+O2+CO2+H2O=Cu2(OH)2CO3;(3)根据题中的叙述可知及反应特点,知在强光照射下,溴化银分解成溴和银,玻璃颜色变深,此反应类型属于分解反应,当光线变暗时,溴和银在氧化铜作用下,重新生成溴化银,玻璃颜色变浅,氧化铜在反应中起催化作用,结合镜片材料从天然水晶、光学玻璃到光学树脂的变迁过程可知化学在保障人类生存和提高人类生活质量方面有重要作用。

单项选择题 A1型题
问答题

Alexander has been the general director of -ZAO- JKL for three months. He has a fi xed term contract with the company that expires in 21 months time. On his appointment he was considered to have all the necessary skills to make the company more competitive. As Alexander owns 12% of the shares in the company, he was also regarded as a person who would be highly committed to the future of -ZAO- JKL.The internal auditor recently informed the board of directors of some disturbing facts. In the course of their duties they discovered that Alexander had records of ongoing discussions with key executives of -ZAO- PQR, the company’s main competitor. These records included notes that contained sensitive information on the sales performance and marketing plans of -ZAO- JKL, and it was quite clear that these had been discussed with the executives of the competitor.When the board of directors asked Alexander for an explanation of his actions, he replied that his actions were totally appropriate as it was common business practice to interact with other infl uential people in the industry and that there would be benefi ts for both companies.The board of directors was not satisfi ed with Alexander’s explanation and decided that they would need to consider Alexander’s future position in the company, as well as any action that might be taken to remedy any losses infl icted on the company by his actions.Required:

(b) Discuss the actions that Alexander may take to defend his position. (4 marks)