巧妙利用注射器

• 作 者: 崔珊
• 机 构: 唐山市丰润区韩城镇中学九(6)班,
• 出 处: 农村青少年科学探究
• 发表日期: 2004年期
• 关键词: 化学学习 氧气含量 锥形瓶 肥皂水 液柱 气密性 内气压 浮渣 指导教师 过氧化氢溶液

学习化学几个月了,我对化学实验产生了浓厚的兴趣。我做了许多化学小实验,越来越发现化学与我们的生活有着密切的关系。比如,在没学化学前,我一直认为注射器只不过是一种简单、常用的医学器械;而学了化学后,我发现小小的注射器在化学学习中经常会遇到,而且它在化学实验中还有着各种各样的用途。下

After a few months of learning chemistry, I became interested in chemistry experiments. I did a lot of chemistry experiments and found that chemistry has a close relationship with our life. For example, before I learned chemistry, I always thought that a syringe was just a simple, commonly used medical device; and after learning chemistry, I found that small syringes were often encountered in chemistry learning, and it was used in chemistry experiments There are also a variety of uses. under