As we all know, chemistry experiment is an indispensable part of chemistry students' classroom, which can not only cultivate students' innovative spirit, but also cultivate their practical ability. However, due to various reasons, the recent frequent laboratory safety accidents have shocked everyone, and many people have doubts about whether there is a chemical experiment. Today I will analyze the following points:
? First of all, chemical reagents are dangerous. Various chemical reagents have different hazards, some of them are corrosive and toxic, and being absorbed by skin or mouth and nose will lead to life safety. If you don't pay attention to splashing on your hands when doing the experiment, your face will be injured. However, if experimenters can wear masks, gloves, goggles and lab clothes, these injuries can actually be avoided.
Secondly, chemical equipment also poses a certain threat. For example, when heated in a salt bath, the temperature is extremely high. If you don't pay attention to protection, you are very likely to be burned.
Finally, irregular chemical operations are also dangerous. For example, the installation requires from bottom to top and from left to right. If you don't do it according to the regulations, it is likely that the equipment will be unstable, and because of the irregular operation, you may not get accurate results, and what's more terrible is that there may be personal injury.
In a word, all kinds of threats in the process of chemical experiments have been mentioned above, but we can't give up eating because of choking. As long as we carefully consult the relevant information before the experiment, understand the toxicity of each reagent, do a good job of protection, carefully follow the relevant operating steps during the experiment, and carefully complete the experiment, we will certainly be able to avoid the harm brought by the experiment.