问题 填空题

初中化学教材中常用下列词语描述物质的性质:a.氧化性b.还原性c.可燃性d.毒性e.吸水性f.溶解 性g.酸碱性h.腐蚀性,请选择合适的代号(a~h)填写下列空格(每格只填一个代号):

(1)浓硫酸通常用作干燥剂,是因为它有________

(2)氢气可用作高能燃料,是因为它有____

(3)氧气在燃烧反应中一般表现出____

(4)用一氧化碳冶炼铁,是利用它的____

(5)石蕊和酚酞可用来检验溶液的____

(6)硫酸和氢氧化钠对人的皮肤有____

答案

(1)e

(2)c

(3)a

(4)b

(5)g

(6)h

材料分析题

材料一:小利看到有人抽烟,于是也想尝一口。从此,常偷家里的钱买烟抽,他觉得这样在同学面前特有面子。

材料二:民民自小爱下象棋,星期天、节假日喜欢跟人下象棋。

(1)材料一二分别属于什么情趣?这两类情趣分别对人有怎样的影响?

                                                                                                                                                              

                                                                                                                                                             

                                                                                                                                                            

(2)在生活中,我们应怎样追寻高雅的生活?

                                                                                                                                                           

                                                                                                                                                          

                                                                                                                                                           

名词解释