某同学利用所学化肥的物理、化学性质的不同初步区分常见化肥①碳

某同学利用所学化肥的物理、化学性质的不同初步区分常见化肥①碳酸氢铵、②氯化铵、③磷矿粉、④硫酸钾。[请用序号填空]

⑴看外观,灰白色粉末的物质是            ,白色晶体是                      

⑵闻气味,有刺激性气味的是            ,无刺激性气味的是                  

⑶加熟石灰,研磨,放出有刺激性气味气体的是                                

答案

)⑴③    ①②④    ⑵①   ②④     ⑶②

相关题目

如下图,已知电源电压为E,内电阻为r,问当外电阻R取什么值时,
如下图,已知电源电压为E,内电阻为r,问当外电阻R取什么值时,输出的功s率最大?      
血液循环中,体循环开始于心脏的__________________, 止于心脏
血液循环中,体循环开始于心脏的__________________, 止于心脏的________________。 肺循环开始于心脏的__________________, 止于心脏的__________________。  
I was much disappointed to see the washing-machine I had______the other day went
I was much disappointed to see the washing-machine I had______the other day went wrong again. A.repaired it                        B.repaired C.it repaired           
鲫鱼胸鳍和腹鳍的主要作用是(  ) A 划水游泳      B在
鲫鱼胸鳍和腹鳍的主要作用是(  ) A 划水游泳      B在水底爬行      C平衡身体    D控制前进的方向
以下性质的比较中,正确的是(        )A.最高正价:F>
以下性质的比较中,正确的是(        )A.最高正价:F>O>N                     B.原子半径:P> N > O                    
 Audrey Hepburn ____ dancing and focused on acting after her first successful
 Audrey Hepburn ____ dancing and focused on acting after her first successful movie.    A. gave in     B. gave off      C. gave out        D. gave up
微粒模型观察与比较。如左下图所示,在钠与氯气的反应中
微粒模型观察与比较。如左下图所示,在钠与氯气的反应中,每个钠原子失去1个电子,成为1个钠离子;每个氯原子得到1个电子,成为1个氯离子;钠离
The first big wave of Chinese immigration to America came when gold was discove
The first big wave of Chinese immigration to America came when gold was discovered in California in 1848.The Chinese called the new land“Mountain of Gold”.Those who did not become miners found

最新题目